Oreamuno's Coup d'État

Date: March 29, 1823 • Location: Mexico City, Mexico

This milestone marked the outbreak and beginning of this historic period, which spanned 1823.

Joaquín de Oreamuno led a coup d'état that overthrew Rafael Francisco Osejo, attempting to restore allegiance to the Mexican Empire.

Joaquín Mariano de Oreamuno was a Costa Rican politician who led a coup in 1823 that attempted to make Costa Rica part of the First Mexican Empire. A few days later the imperialist forces were defeated by republicans under Gregorio José Ramírez in the Battle of Ochomogo.