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Plateau
In geology and physical geography, a plateau (; ; : plateaus or plateaux), also called a high plain or a tableland, is an area of a highland consisting of flat terrain that is raised sharply above the surrounding area on at least one side. Often one or more sides have deep hills or escarpments. Plateaus can be formed by a number of processes, including upwelling of volcanic magma, extrusion of lava, and erosion by water and glaciers. Plateaus are classified according to their surrounding environment as intermontane, piedmont, or continental. A few plateaus may have a small flat top while others have wider ones. Formation Plateaus can be formed by a number of processes, including upwelling of volcanic magma, extrusion of lava, plate tectonics movements, and erosion by water and glaciers. Volcanic Volcanic plateaus are produced by volcanic activity. They may be formed by upwelling of volcanic magma or extrusion of lava. The underlining mechanism in forming p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battle Of Varna
The Battle of Varna took place on 10 November 1444 near Varna in what is today eastern Bulgaria. The Ottoman army under Sultan Murad II (who did not actually rule the sultanate at the time) defeated the Crusaders commanded by King Władysław III of Poland and Hungary, John Hunyadi (acting as commander of the combined Christian forces) and Mircea II of Wallachia. It was the final battle of the unsuccessful Crusade of Varna, a last-ditch effort to prevent further Ottoman expansion into the Balkans. Background The Hungarian Kingdom fell into crisis after the death of King Sigismund in 1437. His son-in-law and successor, King Albert, ruled for only two years and died in 1439, leaving his widow Elizabeth with an unborn child, Ladislaus the Posthumous. The Hungarian noblemen then called the young King Władysław III of Poland to the throne of Hungary, expecting his aid in defense against the Ottomans. After his Hungarian coronation, he never went back to his homeland again, as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danubian Plain (Bulgaria)
The Danubian Plain () constitutes the northern part of Bulgaria, situated north of the Balkan Mountains and south of the Danube. Its western border is the Timok River, and to the east it borders the Black Sea. The plain has an area of . It is about long and wide. The Danubian Plain is contiguous with the Wallachian Plain (forming the Lower Danubian Plain), but its elevation is slightly higher and the relief is more hilly and rolling, featuring numerous plateaux and river valleys. The climate is markedly temperate continental with a weak Black Sea influence in the east. Precipitation is on average 450–650 mm a year. Important rivers include the Danube, the Iskar, the Yantra, the Osam, the Vit, the Rusenski Lom, the Ogosta, and the Lom. Among the major cities of the region are Rousse, Pleven, Dobrich, Shumen, Vidin, Silistra, Targovishte, Razgrad, Svishtov and Lom. Minerals The Danubian Plain contains a wide variety of minerals, such as: * Lignite (Lomski ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulgaria
Bulgaria, officially the Republic of Bulgaria, is a country in Southeast Europe. It is situated on the eastern portion of the Balkans directly south of the Danube river and west of the Black Sea. Bulgaria is bordered by Greece and Turkey to the south, Serbia and North Macedonia to the west, and Romania to the north. It covers a territory of and is the tenth largest within the European Union and the List of European countries by area, sixteenth-largest country in Europe by area. Sofia is the nation's capital and List of cities and towns in Bulgaria, largest city; other major cities include Burgas, Plovdiv, and Varna, Bulgaria, Varna. One of the earliest societies in the lands of modern-day Bulgaria was the Karanovo culture (6,500 BC). In the 6th to 3rd century BC, the region was a battleground for ancient Thracians, Persians, Celts and Ancient Macedonians, Macedonians; stability came when the Roman Empire conquered the region in AD 45. After the Roman state splintered, trib ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
