Bantu introduced several crops while migrating across Africa, yams, sorghum and millet.
The British government decided to make the American<span> colonies pay a large share of the war debt from the French and Indian War. Through the Sugar Act, Stamp Act, and other taxes, the British tried to collect taxes that the </span>American<span> people considered harsh.</span>
4- they feared attacks. from Japan and Korea.
5-the cost of maintain overseas
6-the french colonist did not try to convert
Answer:
City-state, a political system consisting of an independent city having sovereignty over contiguous territory and serving as a centre and leader of political, economic, and cultural life.
(I don't know how it spreaded though, sorry :<)