please help me there are 3 questions
In what way were Mesoamerican civilizations like the ancient Romans of Western Europe?
Select one:
a. They created governments based on city-states instead of one centralized government.
b. The Aztec and Maya placed famous warriors as the heads of state in their governments.
c. The government of each Mesoamerica region was controlled by a dynasty, or ruling family.
d. They gradually built a government based on representative democracy.


The decline or weakening of Mesoamerican civilizations can be attributed to two "natural" causes in addition to deliberate attacks by Spanish invaders. What were these two causes?
Select one:
a. lack of agricultural skill and loss of fertile farmland
b. floods and an earthquake
c. infectious diseases and drought
d. overpopulation and lack of domesticated animals


For centuries, the Inca civilization was well hidden from Spanish invaders and explorers. What protected this unique culture from outside influences?
Select one:
a. Most Inca settlements were hidden by the thickly growing vegetation of South American rain forests.
b. Inca settlements were usually protected by armed guards who kept intruders out.
c. Inca settlements were difficult to find and reach because they were build at high altitudes on rough terrain.
d. Inca settlements were usually hidden by dense fog and located in swamps that were hard to navigate.