The Province of Cuyo was a historical province of

Argentina Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...

. Created on 14 November 1813 by a decree issued by the

Second Triumvirate The Second Triumvirate was an extraordinary commission and magistracy created at the end of the Roman republic for Mark Antony, Lepidus, and Octavian to give them practically absolute power. It was formally constituted by law on 27 November ...

, it had its capital in Mendoza, and was composed of the territories of the present-day Argentine provinces of Mendoza,

San Juan San Juan, Spanish for Saint John (disambiguation), Saint John, most commonly refers to: * San Juan, Puerto Rico * San Juan, Argentina * San Juan, Metro Manila, a highly urbanized city in the Philippines San Juan may also refer to: Places Arge ...

and San Luis. For centuries in colonial times, the region was part of the

Captaincy General of Chile The General Captaincy of Chile (''Capitanía General de Chile'' ), Governorate of Chile, or Kingdom of Chile, was a territory of the Spanish Empire from 1541 to 1818 that was, initially, part of the Viceroyalty of Peru. It comprised most of mod ...

, which at the time formed part of the

Viceroyalty of Peru The Viceroyalty of Peru (), officially known as the Kingdom of Peru (), was a Monarchy of Spain, Spanish imperial provincial administrative district, created in 1542, that originally contained modern-day Peru and most of the Spanish Empire in ...

. In 1778, the territories under the jurisdiction of

Santiago de Chile Santiago (, ; ), also known as Santiago de Chile (), is the capital city, capital and largest city of Chile and one of the largest cities in the Americas. It is located in the country's Chilean Central Valley, central valley and is the center ...

were divided: Cuyo was transferred to the

Viceroyalty of the Río de la Plata The Viceroyalty of the Río de la Plata or Viceroyalty of Buenos Aires ( or Virreinato de Buenos Aires or ) meaning "River of the Silver", also called the "Viceroyalty of River Plate" in some scholarly writings, in southern South America, was ...

, the last Viceroyalty of the

Spanish Empire The Spanish Empire, sometimes referred to as the Hispanic Monarchy (political entity), Hispanic Monarchy or the Catholic Monarchy, was a colonial empire that existed between 1492 and 1976. In conjunction with the Portuguese Empire, it ushered ...

, created a short time before (in 1776) with its capital in

Buenos Aires Buenos Aires, controlled by the government of the Autonomous City of Buenos Aires, is the Capital city, capital and largest city of Argentina. It is located on the southwest of the Río de la Plata. Buenos Aires is classified as an Alpha− glob ...

, while the territories of the Captaincy General of Chile lying west of the

Andes The Andes ( ), Andes Mountains or Andean Mountain Range (; ) are the List of longest mountain chains on Earth, longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range ...

remained part of the Viceroyalty of Peru. The first and foremost Governor of the Province of Cuyo was

José de San Martín José Francisco de San Martín y Matorras (; 25 February 177817 August 1850), nicknamed "the Liberator of Argentina, Chile and Peru", was an Argentine general and the primary leader of the southern and central parts of South America's succe ...

, who devoted his Governorship to the creation of the Army of the Andes and preparations for the

Crossing of the Andes The Crossing of the Andes () was one of the most important feats in the Argentine War of Independence, Argentine and Chilean War of Independence, Chilean wars of independence. A Army of the Andes, combined army of Argentine soldiers and Chilea ...

campaign.

References

Former political divisions related to Argentina {{Argentina-hist-stub