Question: what happened on 25th of may?
Answer: 1809 – Chuquisaca Revolution: Patriot revolt in Chuquisaca (modern-day Sucre) against the Spanish Empire, sparking the Latin American wars of independence. 1810 – May Revolution: Citizens of Buenos Aires expel Viceroy Baltasar Hidalgo de Cisneros during the "May Week", starting the Argentine War of Independence.