Question

Need help with these 2 questions please

1. The cultivation of maize was most important to peoples located in
A. the Indus Valley.
B. Egypt.
C. Mesopotamia.
D. Mesoamerica.

2. Both the Mayan and ancient Mesopotamian civilizations
A. excelled in astronomy and mathematics.
B. existed in desert environments.
C. stopped enslaving their enemies
D. worked to grow maize and beans
I think 1 was D & I'm not to sure what 2 is but I'm not 100% sure