Answer:
Pacific Northwest is the region where the tribes live.
B. Built on drained and filled lake beds.
Mexico city was built on drained and filled lake beds. The following reasons were the motivations for altering the lake beds and draining it in order to build a city.
1. To reduce the risk of flooding.
2. To protect the city from being invaded.
3. To prevent diseases from spreading.
4. In order to mine the gold under these lake beds
Answer:
point A is at 7000 feet . The symbol at point B is a picnic area. then the elevation point of B is 6800