I need the answers for this please the book is called night all answers needed

Arelationship where each person relies on the other; a give and take relationship

Which of the following was a key accomplishment of the people of songhai? a. they had a strong military and became the largest empire in west africa. b. they established a center of islamic scholarship. c. they worked with iron and prospered from the gold-salt trade. d. they dominated in the trade of ivory, enslaved people, and animal skins.

When the communist, under mao, took control of china in 1949 they announced total support support for which country and its ideology?