The two primary empire that existed in the Americas before the arrival of the Europeans were the Inca and the Maya, who existed in Central and South America.
The arrival of the Europeans marked the beginning of the end and both empires were destroyed in a campaign of genocide.
When Mohammad marched to Mecca, many people became Muslim and accepted the religion of Islam. Hence, the answer is C, <span>it helped to unify much of the Arabian peninsula under Islam. </span>
I think it's D., but please make sure you believe it's D.
Trade began when people needed other goods that others didn't have a little while after the trading began people started recording the trades to keep track of what the had and what the needed to trade to get more goods