How was the geography of the Aztec empire different from the geography of the Olmec civilization? Choose the TWO correct answers.

A. In the Aztec empire, rivers from highlands watered farm fields.
B. In the Aztec empire, winds from the drylands caused droughts.
C. The climate of the Aztec empire was generally cooler.
D. The coastal villages of the Aztec empire traded with other groups.​