Can you check my answers?

Question

Why did Olmec farmers move their farms from time to time?
A. As their families grew, people needed larger farms.
B. Maya invaders took over their farmlands.
C. Heavy rains flooded their fields and forced them to find new land.
D. The soil would wear out and could no longer support farming.

Which of these groups introduced the mathematical concept of zero to the Americas?
A. the Zapotec
B. the Olmec
C. the Spanish
D. the Maya

Which of the following is a way that the Agricultural Revolution impacted early Mesoamerican civilizations?
A. People had to hunt and gather more.
B. People began to settle in villages.
C. People began to raise wild animals.
D. People traveled from place to place more.

My answers: D D B

Answer 1

Right.

Answer 2

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