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The Wall Street Crash of 1929, also known as the Great Crash, was a major American
stock market crash A stock market crash is a sudden dramatic decline of stock prices across a major cross-section of a stock market, resulting in a significant loss of paper wealth. Crashes are driven by panic selling and underlying economic factors. They often foll ...
that occurred in the autumn of 1929. It started in September and ended late in October, when share prices on the
New York Stock Exchange The New York Stock Exchange (NYSE, nicknamed "The Big Board") is an American stock exchange in the Financial District of Lower Manhattan in New York City. It is by far the world's largest stock exchange by market capitalization of its listed ...
collapsed. It was the most devastating stock market crash in the history of the United States, when taking into consideration the full extent and duration of its aftereffects. The Great Crash is mostly associated with October 24, 1929, called ''Black Thursday'', the day of the largest sell-off of shares in U.S. history, and October 29, 1929, called ''Black Tuesday'', when investors traded some 16 million shares on the New York Stock Exchange in a single day. The crash, which followed the
London Stock Exchange London Stock Exchange (LSE) is a stock exchange in the City of London, England, United Kingdom. , the total market value of all companies trading on LSE was £3.9 trillion. Its current premises are situated in Paternoster Square close to St P ...
's crash of September, signaled the beginning of the Great Depression.


Background

The "
Roaring Twenties The Roaring Twenties, sometimes stylized as Roaring '20s, refers to the 1920s decade in music and fashion, as it happened in Western society and Western culture. It was a period of economic prosperity with a distinctive cultural edge in the ...
", the decade following
World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
that led to the crash, was a time of wealth and excess. Building on post-war optimism, rural Americans migrated to the cities in vast numbers throughout the decade with hopes of finding a more prosperous life in the ever-growing expansion of America's industrial sector. Despite the inherent risk of speculation, it was widely believed that the stock market would continue to rise forever. On March 25, 1929, after the
Federal Reserve The Federal Reserve System (often shortened to the Federal Reserve, or simply the Fed) is the central banking system of the United States of America. It was created on December 23, 1913, with the enactment of the Federal Reserve Act, after a ...
warned of excessive speculation, a small crash occurred as investors started to sell stocks at a rapid pace, exposing the market's shaky foundation. Two days later, banker Charles E. Mitchell announced that his company, the National City Bank, would provide $25 million in credit to stop the market's slide. Mitchell's move brought a temporary halt to the financial crisis, and
call money Call money is minimum short-term finance repayable on demand, with a maturity period of one to fourteen days or overnight to a fortnight. It is used for inter-bank transactions. The money that is lent for one day in this market is known as "call ...
declined from 20 to 8 percent. However, the American economy showed ominous signs of trouble. Steel production declined, construction was sluggish, automobile sales went down, and consumers were building up large debts because of easy credit. Despite all the economic warning signs and the market breaks in March and May 1929, stocks resumed their advance in June, and the gains continued almost unabated until early September 1929 (the Dow Jones average gained more than 20% between June and September). The market had been on a nine-year run that saw the
Dow Jones Industrial Average The Dow Jones Industrial Average (DJIA), Dow Jones, or simply the Dow (), is a stock market index of 30 prominent companies listed on stock exchanges in the United States. The DJIA is one of the oldest and most commonly followed equity inde ...
increase in value tenfold, peaking at 381.17 on September 3, 1929. Shortly before the crash, economist Irving Fisher famously proclaimed "Stock prices have reached what looks like a permanently high plateau." The optimism and the financial gains of the great
bull market A market trend is a perceived tendency of financial markets to move in a particular direction over time. Analysts classify these trends as ''secular'' for long time-frames, ''primary'' for medium time-frames, and ''secondary'' for short time-fram ...
were shaken after a well-publicized September 8 prediction from financial expert
Roger Babson Roger Ward Babson (July 6, 1875 – March 5, 1967) was an American entrepreneur, economist, and business theorist in the first half of the 20th century. He is best remembered for founding Babson College. He also founded Webber College, now Webb ...
that "a crash is coming, and it may be terrific". The initial September decline was thus called the "Babson Break" in the press. That was the start of the Great Crash, but until the severe phase of the crash in October, many investors regarded the September "Babson Break" as a "healthy correction" and buying opportunity. On September 20, 1929, top British investor
Clarence Hatry Clarence Charles Hatry (16 December 1888 – 10 June 1965) was an English company promoter, financier, bankrupt, bookseller and publisher. The fall of the Hatry group in September 1929, which had been worth about £24 million (), is cited as a co ...
and many of his associates were jailed for fraud and forgery, leading to the suspension of his companies. This may have weakened the confidence of Americans in their own companies, although it had minimal impact on the London Stock Exchange. In the days leading up to the crash, the market was severely unstable. Periods of selling and high volumes were interspersed with brief periods of rising prices and recovery.


Crash

Selling intensified in mid-October. On October 24, "Black Thursday", the market lost 11% of its value at the opening bell on very heavy trading. The huge volume meant that the report of prices on the
ticker tape Ticker tape was the earliest electrical dedicated financial communications medium, transmitting stock price information over telegraph lines, in use from around 1870 through 1970. It consisted of a paper strip that ran through a machine called ...
in brokerage offices around the nation was hours late, and so investors had no idea what most stocks were trading for. Several leading Wall Street
banker A bank is a financial institution that accepts deposits from the public and creates a demand deposit while simultaneously making loans. Lending activities can be directly performed by the bank or indirectly through capital markets. Becaus ...
s met to find a solution to the panic and chaos on the trading floor. The meeting included Thomas W. Lamont, acting head of Morgan Bank;
Albert Wiggin Albert Henry Wiggin (February 21, 1868 – May 21, 1951) was an American banker. General Electric's Owen D. Young once described him as "the most colorful and attractive figure in the commercial banking world" of his time. Wiggin was the Di ...
, head of the
Chase National Bank JPMorgan Chase Bank, N.A., doing business as Chase Bank or often as Chase, is an American national bank headquartered in New York City, that constitutes the consumer and commercial banking subsidiary of the U.S. multinational banking and fina ...
; and Charles E. Mitchell, president of the National City Bank of New York. They chose Richard Whitney, vice president of the Exchange, to act on their behalf. With the bankers' financial resources behind him, Whitney placed a bid to purchase 25,000 shares of U.S. Steel at $205 per share, a price well above the current market. As traders watched, Whitney then placed similar bids on other " blue chip" stocks. The tactic was similar to one that had ended the Panic of 1907 and succeeded in halting the slide. The Dow Jones Industrial Average recovered, closing down only 6.38 points (2.09%) for the day. On October 28, "Black Monday", more investors facing
margin calls In finance, margin is the collateral that a holder of a financial instrument has to deposit with a counterparty (most often their broker or an exchange) to cover some or all of the credit risk the holder poses for the counterparty. This risk c ...
decided to get out of the market, and the slide continued with a record loss in the Dow for the day of 38.33 points, or 12.82%. On October 29, 1929, "Black Tuesday" hit Wall Street as investors traded some 16 million shares on the New York Stock Exchange in a single day. Billions of dollars were lost, wiping out thousands of investors. The panic selling reached its peak with some stocks having no buyers at any price. The Dow lost an additional 30.57 points, or 11.73%, for a total drop of 68.90 points, or 23.05% in two days. On October 29, William C. Durant joined with members of the
Rockefeller family The Rockefeller family () is an American industrial, political, and banking family that owns one of the world's largest fortunes. The fortune was made in the American petroleum industry during the late 19th and early 20th centuries by brot ...
and other financial giants to buy large quantities of stocks to demonstrate to the public their confidence in the market, but their efforts failed to stop the large decline in prices. The massive volume of stocks traded that day made the ticker continue to run until about 7:45 p.m. After a one-day recovery on October 30, when the Dow regained 28.40 points, or 12.34%, to close at 258.47, the market continued to fall, arriving at an interim bottom on November 13, 1929, with the Dow closing at 198.60. The market then recovered for several months, starting on November 14, with the Dow gaining 18.59 points to close at 217.28, and reaching a secondary closing peak (
bear market A market trend is a perceived tendency of financial markets to move in a particular direction over time. Analysts classify these trends as ''secular'' for long time-frames, ''primary'' for medium time-frames, and ''secondary'' for short time-fram ...
rally) of 294.07 on April 17, 1930. The Dow then embarked on another, much longer, steady slide from April 1930 to July 8, 1932, when it closed at 41.22, its lowest level of the 20th century, concluding an 89.2% loss for the index in less than three years. Beginning on March 15, 1933, and continuing through the rest of the 1930s, the Dow began to slowly regain the ground it had lost. The largest percentage increases of the Dow Jones occurred during the early and mid-1930s. In late 1937, there was a sharp dip in the stock market, but prices held well above the 1932 lows. The Dow Jones did not return to its peak close of September 3, 1929, for 25 years, until November 23, 1954.


Aftermath

In 1932, the
Pecora Commission The Pecora Investigation was an inquiry begun on March 4, 1932, by the United States Senate Committee on Banking and Currency to investigate the causes of the Wall Street Crash of 1929. The name refers to the fourth and final chief counsel for th ...
was established by the
U.S. Senate The United States Senate is the upper chamber of the United States Congress, with the House of Representatives being the lower chamber. Together they compose the national bicameral legislature of the United States. The composition and pow ...
to study the causes of the crash. The following year, the U.S. Congress passed the Glass–Steagall Act mandating a separation between
commercial bank A commercial bank is a financial institution which accepts deposits from the public and gives loans for the purposes of consumption and investment to make profit. It can also refer to a bank, or a division of a large bank, which deals with co ...
s, which take deposits and extend
loan In finance, a loan is the lending of money by one or more individuals, organizations, or other entities to other individuals, organizations, etc. The recipient (i.e., the borrower) incurs a debt and is usually liable to pay interest on that ...
s, and
investment bank Investment is the dedication of money to purchase of an asset to attain an increase in value over a period of time. Investment requires a sacrifice of some present asset, such as time, money, or effort. In finance, the purpose of investing i ...
s, which
underwrite Underwriting (UW) services are provided by some large financial institutions, such as banks, insurance companies and investment houses, whereby they guarantee payment in case of damage or financial loss and accept the financial risk for liabilit ...
, issue, and distribute stocks, bonds, and other
securities A security is a tradable financial asset. The term commonly refers to any form of financial instrument, but its legal definition varies by jurisdiction. In some countries and languages people commonly use the term "security" to refer to any for ...
. After, stock markets around the world instituted measures to suspend trading in the event of rapid declines, claiming that the measures would prevent such panic sales. However, the one-day crash of Black Monday, October 19, 1987, when the Dow Jones Industrial Average fell 22.6%, as well as Black Monday of March 16, 2020 (−12.9%), were worse in percentage terms than any single day of the 1929 crash (although the combined 25% decline of October 28–29, 1929 was larger than that of October 19, 1987, and remains the worst two-day decline ).


World War II

The American mobilization for
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing ...
at the end of 1941 moved approximately ten million people out of the civilian labor force and into the war. World War II had a dramatic effect on many parts of the economy and may have hastened the end of the Great Depression in the United States. Government-financed capital spending accounted for only 5% of the annual U.S. investment in industrial capital in 1940; by 1943, the government accounted for 67% of U.S. capital investment.


Analysis

The crash followed a
speculative Speculative may refer to: In arts and entertainment *Speculative art (disambiguation) *Speculative fiction, which includes elements created out of human imagination, such as the science fiction and fantasy genres **Speculative Fiction Group, a Per ...
boom that had taken hold in the late 1920s. During the latter half of the 1920s, steel production, building construction, retail turnover, automobiles registered, and even railway receipts advanced from record to record. The combined net profits of 536 manufacturing and trading companies showed an increase, in the first six months of 1929, of 36.6% over 1928, itself a record half-year. Iron and steel led the way with doubled gains. Such figures set up a crescendo of stock-exchange speculation that led hundreds of thousands of Americans to invest heavily in the stock market. Many people were borrowing money to buy more stocks. By August 1929, brokers were routinely lending small investors more than two thirds of the face value of the stocks that they were buying. Over $8.5 billion was out on loan, more than the entire amount of currency circulating in the United States at the time.''New York: A Documentary Film''
PBS
The rising share prices encouraged more people to invest on the hope that share prices would rise further. Speculation thus fueled further rises and created an economic bubble. Because of margin buying, investors stood to lose large sums of money if the market turned down or even if it failed to advance quickly enough. The average price to earnings ratio of S&P Composite stocks was 32.6 in September 1929, clearly above historical norms. According to the economist
John Kenneth Galbraith John Kenneth Galbraith (October 15, 1908 – April 29, 2006), also known as Ken Galbraith, was a Canadian-American economist, diplomat, public official, and intellectual. His books on economic topics were bestsellers from the 1950s through t ...
, the exuberance also resulted in a large number of people placing their savings and money in leverage investment products like Goldman Sachs's "Blue Ridge trust" and "Shenandoah Trust," which crashed in 1929 as well, resulting in losses to banks of $475 billion in 2010 dollars ($ billion in ). Good harvests had built up a mass of 250 million bushels of wheat to be "carried over" when 1929 opened. By May there was also a winter wheat crop of 560 million bushels ready for harvest in the Mississippi Valley. The oversupply caused such a drop in wheat prices that the net incomes of farmers from wheat were threatened with extinction. Stock markets are always sensitive to the future state of commodity markets, and the slump in Wall Street that had been predicted for May by Sir George Paish arrived on time. In June 1929, the position was saved by a severe drought in the Dakotas and the Canadian West, as well as unfavorable seed times in Argentina and eastern Australia. The oversupply was now wanted to fill the gaps in the 1929 world wheat production. From 97¢ per bushel in May, the price of wheat rose to $1.49 in July. When it was seen that figure would make American farmers get more for their crop that year than in 1928, stocks went up again. In August, the wheat price fell when France and Italy were bragging about a magnificent harvest, and the situation in Australia improved. That sent a shiver through Wall Street and stock prices quickly dropped, but word of cheap stocks brought a fresh rush of "stags" (amateur speculators) and investors. Congress voted for a $100 million relief package for the farmers on the hope of stabilizing wheat prices, but by October, the price had fallen to $1.31 per bushel. Other important economic barometers were also slowing or even falling by mid-1929, including car sales, house sales, and steel production. The falling commodity and industrial production may have dented even American self-confidence, and the stock market peaked on September 3 at 381.17 just after Labor Day, and it started to falter after
Roger Babson Roger Ward Babson (July 6, 1875 – March 5, 1967) was an American entrepreneur, economist, and business theorist in the first half of the 20th century. He is best remembered for founding Babson College. He also founded Webber College, now Webb ...
issued his prescient "market crash" forecast. By the end of September, the market had dropped 10% from the peak (the "Babson Break"). Selling intensified in early and mid-October, with sharp down days punctuated by a few up days. Panic selling of massive proportion started the week of October 21 and intensified and culminated on October 24, October 28, and especially October 29 ("Black Tuesday"). The president of the Chase National Bank, Albert H. Wiggin, said at the time:


Effects


United States

Together, the 1929 stock market crash and the Great Depression formed the largest financial crisis of the 20th century. The panic of October 1929 has come to serve as a symbol of the economic contraction that gripped the world during the next decade. The falls in share prices on October 24 and 29, 1929 l, were practically instantaneous in all financial markets, except Japan."Crashes, Bangs & Wallops"
''Financial Times''
The Wall Street Crash had a major impact on the U.S. and world economy, and it has been the source of intense academic historical, economic, and political debate from its aftermath until the present day. Some people believed that abuses by utility holding companies contributed to the Wall Street Crash of 1929 and the Great Depression that followed.Jameson, Angela (August 10, 2005
"Pyramid structures brought down by Wall Street Crash"
''
The Times ''The Times'' is a British daily national newspaper based in London. It began in 1785 under the title ''The Daily Universal Register'', adopting its current name on 1 January 1788. ''The Times'' and its sister paper '' The Sunday Times'' (f ...
'', Retrieved March 17, 2010
Many people blamed the crash on commercial banks that were too eager to put deposits at risk on the stock market. In 1930, 1,352 banks held more than $853 million in deposits; in 1931, one year later, 2,294 banks failed with nearly $1.7 billion in deposits. Many businesses failed (28,285 failures and a daily rate of 133 in 1931). The 1929 crash brought the
Roaring Twenties The Roaring Twenties, sometimes stylized as Roaring '20s, refers to the 1920s decade in music and fashion, as it happened in Western society and Western culture. It was a period of economic prosperity with a distinctive cultural edge in the ...
to a halt. As tentatively expressed by economic historian Charles P. Kindleberger, in 1929, there was no
lender of last resort A lender of last resort (LOLR) is the institution in a financial system that acts as the provider of liquidity to a financial institution which finds itself unable to obtain sufficient liquidity in the interbank lending market when other faci ...
effectively present, which, if it had existed and been properly exercised, would have been key in shortening the business slowdown that normally follows financial crises. The crash instigated widespread and long-lasting consequences for the United States. Historians still debate whether the 1929 crash sparked the Great Depression"The Market Turmoil: Past lessons, present advice; Did '29 Crash Spark The Depression?"
''The New York Times''
or if it merely coincided with bursting a loose credit-inspired economic bubble. Only 16% of American households were invested in the stock market within the United States during the period leading up to this depression, suggesting that the crash carried somewhat less weight in causing it. However, the psychological effects of the crash reverberated across the nation as businesses became aware of the difficulties in securing capital market investments for new projects and expansions. Business uncertainty naturally affects job security for employees, and as the American worker (the consumer) faced uncertainty with regards to income, naturally the propensity to consume declined. The decline in stock prices caused bankruptcies and severe
macroeconomic Macroeconomics (from the Greek prefix ''makro-'' meaning "large" + ''economics'') is a branch of economics dealing with performance, structure, behavior, and decision-making of an economy as a whole. For example, using interest rates, taxes, and ...
difficulties, including contraction of credit, business closures, firing of workers, bank failures, decline of the money supply, and other economically depressing events. The resultant rise of mass unemployment is seen as a result of the crash, although the crash is by no means the sole event that contributed to the depression. The Wall Street Crash is usually seen as having the greatest impact on the events that followed and therefore is widely regarded as signaling the downward economic slide that initiated the Great Depression. True or not, the consequences were dire for almost everybody. Most academic experts agree on one aspect of the crash: It wiped out billions of dollars of wealth in one day, and this immediately depressed consumer buying. The failure set off a worldwide run on US gold deposits (i.e. the dollar) and forced the Federal Reserve to raise interest rates into the slump. Some 4,000 banks and other lenders ultimately failed. Also, the
uptick rule The uptick rule is a trading restriction that states that short selling a stock is allowed only on an uptick. For the rule to be satisfied, the short must be either at a price above the last traded price of the security, or at the last traded pric ...
, which allowed short selling only when the last tick in a stock's price was positive, was implemented after the 1929 market crash to prevent short sellers from driving the price of a stock down in a
bear raid A bear raid is a type of stock market strategy, where a trader (or group of traders) attempts to force down the price of a stock to cover a short position. The name is derived from the common use of ''bear'' or ''bearish'' in the language of ma ...
.


Europe

The stock market crash of October 1929 led directly to the Great Depression in Europe. When stocks plummeted on the
New York Stock Exchange The New York Stock Exchange (NYSE, nicknamed "The Big Board") is an American stock exchange in the Financial District of Lower Manhattan in New York City. It is by far the world's largest stock exchange by market capitalization of its listed ...
, the world noticed immediately. Although financial leaders in the United Kingdom, as in the United States, vastly underestimated the extent of the crisis that ensued, it soon became clear that the world's economies were more interconnected than ever. The effects of the disruption to the global system of financing, trade, and production and the subsequent meltdown of the American economy were soon felt throughout Europe. In 1930 and 1931, in particular, unemployed workers went on strike, demonstrated in public, and otherwise took direct action to call public attention to their plight. Within the UK, protests often focused on the so-called means test, which the government had instituted in 1931 to limit the amount of unemployment payments made to individuals and families. For working people, the means test seemed an intrusive and insensitive way to deal with the chronic and relentless deprivation caused by the economic crisis. The strikes were met forcefully, with police breaking up protests, arresting demonstrators, and charging them with crimes related to the violation of public order.


Academic debate

There is a constant debate among economists and historians as to what role the crash played in subsequent economic, social, and political events. ''
The Economist ''The Economist'' is a British weekly newspaper printed in demitab format and published digitally. It focuses on current affairs, international business, politics, technology, and culture. Based in London, the newspaper is owned by The Eco ...
'' argued in a 1998 article that the Depression did not start with the stock market crash, nor was it clear at the time of the crash that a depression was starting. They asked, "Can a very serious Stock Exchange collapse produce a serious setback to industry when industrial production is for the most part in a healthy and balanced condition?" They argued that there must be some setback, but there was not yet sufficient evidence to prove that it would be long or would necessarily produce a general industrial depression."Reactions of the Wall Street slump"
''The Economist'' (November 23, 1929)
However, ''The Economist'' also cautioned that some bank failures were also to be expected and some banks may not have had any reserves left for financing commercial and industrial enterprises. It concluded that the position of the banks was the key to the situation, but what was going to happen could not have been foreseen.
Milton Friedman Milton Friedman (; July 31, 1912 – November 16, 2006) was an American economist and statistician who received the 1976 Nobel Memorial Prize in Economic Sciences for his research on consumption analysis, monetary history and theory and the ...
's ''
A Monetary History of the United States ''A Monetary History of the United States, 1867–1960'' is a book written in 1963 by Nobel Prize–winning economist Milton Friedman and Anna J. Schwartz. It uses historical time series and economic analysis to argue the then-novel proposition ...
'', co-written with
Anna Schwartz Anna Jacobson Schwartz (pronounced ; November 11, 1915 – June 21, 2012) was an American economist who worked at the National Bureau of Economic Research in New York City and a writer for ''The New York Times''. Paul Krugman has said that Schwar ...
, argues that what made the "great contraction" so severe was not the downturn in the business cycle,
protectionism Protectionism, sometimes referred to as trade protectionism, is the economic policy of restricting imports from other countries through methods such as tariffs on imported goods, import quotas, and a variety of other government regulatio ...
, or the 1929 stock market crash in themselves but the collapse of the banking system during three waves of panics from 1930 to 1933."Panic control"
''The Washington Times''


See also

*
Causes of the Great Depression The causes of the Great Depression in the early 20th century in the United States have been extensively discussed by economists and remain a matter of active debate. They are part of the larger debate about economic crises and recessions. The sp ...
* Criticism of the Federal Reserve *
Great Contraction The Great Contraction is the recessionary period from 1929 until 1933, i.e., the early years of the Great Depression, as characterized by economist Milton Friedman. The phrase was the title of a chapter in the landmark 1963 book '' A Monetary Hist ...
*
List of largest daily changes in the Dow Jones Industrial Average This is a list of the largest daily changes in the Dow Jones Industrial Average from 1896. Compare to the list of largest daily changes in the S&P 500 Index. Largest percentage changes The first four tables show only the largest one-day chang ...


Notes


Further reading

* Axon, Gordon V. (1974). ''The Stock Market Crash of 1929''. London: Mason & Lipscomb Publishers Inc. * * Brooks, John (1969). ''Once in Golconda: A True Drama of Wall Street 1920–1938''. New York: Harper & Row. * Galbraith, John Kenneth. "1929: New York City." '' Lapham's Quarterly'', no. 2 (Spring 2015): 145–146 * Klein, Maury (2001). ''Rainbow's End: The Crash of 1929''. New York: Oxford University Press. * Klingaman, William K. (1989). ''1929: The Year of the Great Crash''. New York: Harper & Row. * Leone, Bruno (1994). ''The Great Depression: Opposing Viewpoints,'' 14–25. San Diego, California: Bender, David L. * Pendergast, Tom ( 2003). ''American Decades: 1920–1929''. Farmington Hills, Michigan: UXL American Decades Publishing * Shachtman, Tom (1979). ''The Day America Crashed: A Narrative Account of the Great Stock Market Crash of October 24, 1929''. New York: G.P. Putnam. . * Thomas, Gordon and Morgan-Witts, Max (1979). ''The Day the Bubble Burst: A Social History of the Wall Street Crash of 1929''. Garden City, New York: Doubleday. * Watkins, Tom H. (1993). ''The Great Depression: America in the 1930s,'' 22–55. New York: Little, Brown & Company


External links


''The Crash of 1929''
American Experience ''American Experience'' is a television program airing on the Public Broadcasting Service (PBS) in the United States. The program airs documentaries, many of which have won awards, about important or interesting events and people in American his ...
documentary {{Authority control 1929 in economics 1929 in international relations 1929 in New York City Economic bubbles Great Depression in the United States Roaring Twenties Stock market crashes September 1929 events October 1929 events