Which of the following was not a contributing factor in the spanish defeat of the aztec and inca? a. the spanish formed military alliances with enemies of the aztec or inca. c. native americans were frightened and in awe of the spanish men on horseback. b. the spanish lacked immunity to native american diseases. d. the spanish had superior weaponry, including guns and cannons.

The Spanish lacked immunity to Native American diseases was not a contributing factor. It was the other way around, they brought diseases which ended up killing many of the Aztecs and Incas.

Assemblies do not have written codes of laws. laws are matters for magistrates and courts, not assemblies. codes of law are things such as civil law, criminal law, and constitutional law. what assemblies have are procedures regarding debating, voting and other business they might carry out.  also note that rome had three assemblies: the assembly of the soldiers, the assembly of the tribes, and the plebeian councils.