Type your response in the box. List three factors that that caused Africa to become a growing source of slaves for the slave trade.

Slavery in Africa grew as a result of three factors:

Slavery had been practiced in Africa for centuries, particularly in the Middle East. This already existing slave trade was extended by Europeans.

Slavery spread across Africa as a result of tribal and other wars. Soldiers from the losing side were taken prisoner and sold into slavery after these battles.

Europeans were in desperate need of cheap labor in the United States to work their land.

I hope this helps you and this is right

the use of email to replace slower surface mail.

the right answer is the third one: turnpikes went short distances to connect markets. turnpikes, also known as toll roads, were very important for trade and transportation (of people, goods and products) in the 19th century, coinciding with the expansion towards the west. they contributed significantly to the economic development of the united states.