The southern colonies were not as large as the middle colonies, or as multicultural, but they were more diverse than the New England colonies. Most of the southern colonists were British, but there was a large group of Scots Irish migrated south. This group came to the Middle Colonies first. They traveled west and when they hit the Appalachian Mountains, they traveled south and filled the valleys and hollers of Appalachia. Of course most of the diversity came to the south not by choice. By 1770, 40% of the population was made up of African Slaves.