Question

without rain, food could run low. in these times, wars were likely more common.

1. how did walls help researchers understand maya cities?
2. walls showed that maya cities often. cities built walls to keep out from

Explanation:

Walls in Maya cities are architectural remnants. They suggest defensive purposes, indicating that cities needed protection. This implies threats such as invaders or enemies.

Answer:

Walls showed that Maya cities often needed protection. Cities built walls to keep out invaders from other cities/foreign groups.