Why is age an important determinant in decisions regarding migration?

Ineed answers 5 and 6 on my social studies homework reply to this question i posted

Type the correct answer in the box what weather pattern did indian farmers depend on to bring water for their crops? indian farmers depended on the to bring water for their crops reset ne

The event shown in the map is a cause of which of the following? *pic* gadsden purchase battle of the alamo bear flag revolt settlement of texas