The correct answers are 3) the Aztecs welcomed the Spanish with gifts. 4) the Spanish took Montezuma prisoner. 5) smallpox weakened the Aztec's ability to resist.
The statements that describe an event that contributed to the decline of the Aztec empire were the following: the Aztecs welcomed the Spanish with gifts, the Spanish took Montezuma prisoner, and smallpox weakened the Aztec's ability to resist.
One of the problems the Aztecas had from the very beginning of their encounter with the Spaniards was that they were confused because they considered the Conquerors as gods for the way they looked and the weapons and uniforms they carried. So Aztecs opened "all the doors of the empire." They offered gold and richness to the Spaniards and that is when Cortés and his men acted.
Because it established judicial review which gave the Supreme Court the ability to declare legislations unconstitutional which in turn limited congressional power.
