Battle of Cepeda (1820)

The Battle of Cepeda of 1820 took place on February 1 of that year in Cañada de Cepeda, Santa Fe, Argentina.

It was the first battle that saw Unitarians and Federals as two constituted sides. Santa Fe and Entre Ríos caudillos Estanislao López and Francisco Ramírez joined forces to topple the Unitarian governor of Buenos Aires Province José Rondeau.

With the Federal victory, the 13 provinces became a federal nation by the Treaty of Pilar, with Buenos Aires as one of the federal provinces, but in charge of the foreign affairs of the country.