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Costa Rica, El Salvador, Guatemala, Honduras & Nicaragua declare their independence from the Spanish Empire
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Costa Rica annexes Guanacaste from Nicaragua.
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Slavery is abolished in Costa Rica.
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Costa Rica beats William Walker's invading Nicaraguans.
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Costa Rica becomes a signatory to the Buenos Aires copyright treaty.
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Costa Rica, Guatemala, Honduras & El Salvador sign Pact of Union.
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Costa Rica adopts Constitution
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Costa Rican President Oscar Arias wins Nobel Peace Prize.