Which of the following statements best describes the relationship between colonization and slavery in the centuries following the 1500s? a. when colonial powers lost some of their people because of migration to the colonies, they imported slaves to make up for the population loss. b. as colonies grew, colonial powers increasingly relied on slaves for hard labor. c. after colonial powers won colonies through battle, they integrated the conquered people into society as slaves. d. because colonies needed local leadership, colonial powers trained and educated slaves to assume government positions.