9. Large numbers of African Americans were transported to Great Britain's North American colonies only after: (a) Planters in the South began growing large quantities of indigo. (b) French defeat in the Seven Years' War permitted expansion across the Appalachian Mountains. (c) Indentured servants became less profitable for southern planters. (d) The removal of American Indians to lands west of the Mississippi made more agricultural land available.

9. Large numbers of African Americans were transported to Great Britain's North American colonies only after: (a) Planters in the South began growing large quantities of indigo. (b) French defeat in the Seven Years' War permitted expansion across the Appalachian Mountains. (c) Indentured servants became less profitable for southern planters. (d) The removal of American Indians to lands west of the Mississippi made more agricultural land available.