books.google.com - By the time of the American Revolution, blacks made up 20 percent of the colonial population. Early in colonial history, many blacks who came to America were indentured servants who served out their contracts and then settled in the colonies as free men. Over time, however, more and more blacks arrived...http://books.google.com/books/about/Blacks_in_colonial_America.html?id=quwi6J7GZ6wC&utm_source=gb-gplus-shareBlacks in colonial America
