History 1301

Discuss why the early English attempts at colonization were such disasters. What went wrong at Roanoke and Jamestown? How responsible were the colonists for the failure? How did the Virginia Company attempt to deal with this unsuccessful beginning at Jamestown? What and who eventually turned the Jamestown colony around?
As 1 of the sources "Give Me Liberty" volume 1 by eric foner would be nice if you have the source, if not others would be fine. Bibliography needed