After the French and Indian war the British had wasted a lot of money on the war so they decided to tax the colonist to pay the cost of the war since they now owned the land they took from the Indians during the war Hope this helps :)
Plains Indians started hunting buffalo more efficiently.
The kingdoms of Ghana, Mali, and Songhai prospered primarily due to their "<span>(1) exchanges with Indian ports" but it should be noted there were other factors. </span>