I need help please help me!

The leadership of this empire was weakened by a civil war.


A
Inca

B
both

C
Aztec
The conquistadors made alliances with Native Americans against this empire.


A
Inca

B
both

C
Aztec
The leader of this empire was killed during the conquest.


A
Aztec

B
Inca

C
both
A smallpox epidemic weakened this empire's ability to defend against invasion.


A
Inca

B
Aztec

C
both

Will mark brainliest for whoever answers!!