Although individuals did not own land, tribes could and one would have to join a tribe to be able to use the land.

True.

Noting that you said that "Individuals did not own land, but tribes could", implies that one has to be in a tribe to use the land, as they themselves cannot own it.

hope this helps

True

Explanation: Just took the test, hope this helps :)

silk

indigo  

rice

all the other answers are wrong

the answer is b: an economic crisis throughout the country.