Which was the main cause of the great migration to the united states in the late 1800s and early 1900s?

During the growth of colonial america, people saw the need for a colony between south carolina and the spanish in florida. james oglethorpe and 19 settlers were told to start the colony of georgia. which coastal city did oglethorpe and his settlers found? a. jamestown, virginia b. savannah, georgia c. st. augustine, florida d. atlanta, georgia