1970s had slow economic growth and high inflation; things get more expensive while wages stay the same i. Immediate cause is the Vietnam War - caused deficit spending ii. Longer term cause is all that money being directed to the war was taken away from domestic spending
I'd say C for 10, D for 11, and A for 12.
But you might want a second person to verify.
Answer:
Following the conquest of North Africa by Muslim Arabs in the 7th century CE, Islam spread throughout West Africa via merchants, traders, scholars, and missionaries, that is largely through peaceful means whereby African rulers either tolerated the religion or converted to it themselves.
There was an atomic bomb and a number of people were injured and died