The Pacto Federal—with Juan Manuel de Rosas…
January 1831 CE
The Pacto Federal—with Juan Manuel de Rosas governing Buenos Aires Province and the littoral provinces threatened by the centralist alliance ruled by José María Paz—is signed on January 4, 1831, between the armies of Buenos Aires and Santa Fe, who join to invade Córdoba.
Paz, in a preemptive attempt against Estanislao López, the caudillo of Santa Fe, falls prisoner to the Federal forces of Córdoba and Santa Fe while on an inspection mission.
Juan Facundo Quiroga now marches through territories still occupied by natives in order to bypass Córdoba, and attack directly Mendoza, where he succeeds.