The abolition of slavery provoked an armed reaction by the large landowners in the south, especially in
Cauca and Pasto provinces. The largest number of slaves were in Cauca and the attacks on the Church were especially sensitive in the extreme south. The rebellion was led by the brothers Sergio and
Julio Arboleda Pombo, landowners and powerful slave owners who represented that sector of the population, which saw its wealth threatened by the liberation of the slaves. President
José Hilario López sent General
José María Obando to Cauca to quell Julio Arboleda's rebellion, and
Tomás Herrera to the
Valle del Cauca in the west. The war lasted just four months and its epicenters were in
Pasto, Cauca,
Cali and
Antioquia. It ended with a Conservative defeat. Julio Arboleda was defeated by General Manuel María Franco in
Buesaco (Nariño) and fled to Ecuador, and from there to Peru, when the Liberals came to power in Ecuador. In the west, Eusebio Borrero had organized an army of eight hundred men and taken
Medellín but was defeated by General Tomás Herrera at Rio Negro. In
Cundinamarca, the
Guasca guerrilleros, led by the brothers Pastor and
Mariano Ospina Rodríguez, were defeated by General
José María Melo. == Consequences ==