How did the transatlantic slave trade impact the development of the british colonies?

Approximately how many americans, from both the north and the south, were killed in battle during the civil war?

This pie chart shows statistics related to the world's population. a pie chart like this one is most for making predictions about the future. showing how parts make up a whole. presenting amounts over a period of time. comparing information from different sources.

Which statement is true of both presidential and parliamentary systems of government?