What is the name of the West African city that was a religious, trade and educational center during the middle ages?

Where did people have to work with great organization to be successful at farming? a. on the yellow river basin c. on the hangzhou bay b. on the yangzi river basin d. on the hubei basin

Which statement about african americans during the civil war is true? o a. they were granted the vote in the north. o b. they were allowed to attend northern universities. c. they were given deeds to southern plantations. o o d. they enlisted in the union army.

What is the main difference between primary and secondary sources? a. primary sources are historical documents, and secondary sources are modern-day documents. b. primary sources are derived from museums and archives, and secondary sources are created by history students and academics. c. primary sources are found in ancient places with a rich history, and secondary sources are found in historical journals and blogs. d. primary sources are created during a particular historical era, and secondary sources are created by studying primary sources.