Approximately how long have Europeans and Africans been trading along the east coast of Africa?

Which sentence is the best explanation of how food surpluses led to a job specialization during the neolithic revolution

What does the timeline above show about the consequences of the persian wars? a. each city-state of greece had equal influence after the wars. b. athens and sparta continued attacking persia after the wars had ended. c. persia continued to dominate greece for years after the wars. d. the alliance between athens and sparta ended shortly after the wars.

In an industry in which there are several providers of a type of good, why can one business not charge much higher prices for their goods?