Argentina By ellen.farmer.14 May 1, 1516 Juan de Solis reaches the River Plate First European to reach Argentina Jun 19, 1526 Sebastian Cabot reaches the same area Sebastians life May 8, 1580 Buenos Aires is founded Information about modern day. Aug 20, 1776 A Viceroy of the River Plate is founded with Buenos Aires as its capital Argentina History Dec 27, 1806 The British capture Buenos Aires but soon withdraw Period: May 8, 1810 to May 8, 2012 The Viceroy is deposed and a junta takes control of Argentina Jul 7, 1816 Argentina becomes independent of Spain but at first is united with Bolivia and Uruguay. Apr 16, 1825 Bolivia becomes independent of Argentina Sep 10, 1828 Uruguay becomes independent Feb 16, 1835 Rosas becomes dictator of Argentina Rosas life Oct 2, 1852 A rebellion removes Rosas from power Sep 5, 1857 The first railroad in Argentina is built Railroad history Dec 12, 1880 The last indigenous people in Argentina are conquered Mar 5, 1900 Argentina is the richest country in South America. The population of Argentina is about 4 million. Jul 3, 1930 The army stages a coup and General Uriburu became president Aug 24, 1943 The army stages another coup May 31, 1945 Argentina declares war on Germany Sep 18, 1946 Juan Peron becomes president Feb 13, 1955 Peron is forced to flee abroad Jan 8, 1958 Arturo Frondizi is elected president Arturo Frondizi May 8, 1963 Arturo Illia becomes president Jul 11, 1966 The military remove the president Sep 8, 1969 Rioting begins in Cordoba Feb 11, 1973 Peron becomes president Jun 29, 1974 Isabel Peron beomes president after her husband’s death BBC news Jul 25, 1976 The army stages a coup and a period of repression begins May 8, 1982 Argentina invades the Falklands but Britain quickly recaptures them Oct 16, 1983 The junta holds elections. Raul Alfonsin becomes president. Raul Alfonsin Nov 10, 1989 Carlos Menem becomes president Carlos Menem May 8, 2001 Argentina suffers a recession Sep 21, 2007 Christina Kirchner becomes the first female president of Argentian Beliefs on policies