2. July 18, 1830: The first Constitution of Uruguay is adopted.
3. February 27, 1904: José Batlle y Ordóñez is elected President of Uruguay, marking the beginning of a period of progressive social and economic reforms.
4. June 26, 1973: A military coup d'état takes place in Uruguay, leading to a period of authoritarian rule that lasted until 1985.
5. March 1, 1985: Uruguay transitions back to democracy with the inauguration of Julio María Sanguinetti as President.