The navigational compass because it’s obvious
Answer:
D
Explanation:
im not to sure I learned this a while back so I'm not to sure
Rivers help geographer to understand how civilizations developed in several main ways.
1. If there is a river near an old civilization, you know where the civilization got their water from.
2. The civilization could have used the river for exporting and importing goods.
3. The civilization could have gone extinct or failed because of the river flooding.
