PLEASE HELP ME What was one main reason why slave trading greatly expanded beginning around the 1500s? Arab merchants expanded the slave trade into South and East Asia. Europeans started depending on slaves for free labor in new colonies. Europeans needed more slaves in their countries to manage the arrival of new colonial goods. Africans gave up trying to resist capture by European slave traders.

Option:  Europeans started depending on slaves for free labor in new colonies.

Explanation:

It was after the discovery of America and the triangular trade that led to the introduced of slaves in America by European. Slavery, for the first time, became part of in colonies. Colonies in America were dependent on slaves for their survivals because of the harsh climate and struggles. Slaves were required to lessen the burden from the colonists, where they became common in colonies who did domestic chores and toiled in agriculture land. Plantations of tobacco, cotton, and rice helped the settlers to survive and prosper with the help of slaves who worked in the fields.  

i belive the classic sword and a shield would do

do you have a list of sources to choose from?