What group was brought in to replace the native american workers with the american colonies

Native peoples of America had no immunity to the diseases that European explorers and colonists brought with them. Diseases such as smallpox, influenza, measles, and even chicken pox proved deadly to American Indians. Europeans were used to these diseases, but Indian people had no resistance to them.

the puritans were a group of people who grew discontent in the church of england the common unity strengthened the community.