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  1516 - Spanish navigator Juan Diaz de Solis killed by indigenous people while exploring the Rio de la Plata, his death discouraging further European colonisation for more than 100 years.
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  Spanish found Montevideo and take over Uruguay from the Portuguese; many of the indigenous people are killed.
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  Brazil, Argentina renounce claims to territories which become the Eastern Republic of Uruguay.
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  Uruguay joins Argentina and Brazil in war against Paraguay, which is defeated.
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  Campaign by Tupamaros guerrillas begins and lasts until 1973.
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  Army and political leaders agree on return to constitutional government and the release of political prisoners; law grants amnesty to members of the armed forces accused of human rights violations during years of dictatorship; Julio Maria Sanguinetti becomes president.
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  Former dictators jailed