Question

what convinced inca armies to retreat in their war against the spanish in 1530?
the spanish captured their emperor.
the spanish executed their emperor.
the spanish captured their capital city.
the spanish joined forces with native groups.

Explanation:

In 1532, Francisco Pizarro captured the Inca emperor Atahualpa. The Inca armies, operating under a system where the emperor held great authority, were convinced to retreat in 1533 due to the capture of their emperor. The execution of the emperor happened later, the capital (Cuzco) was captured after the retreat - related events, and the Spanish joining with native groups was not the key factor for the 1533 retreat.

Answer:

A. The Spanish captured their emperor.