How might westward expansion lead to conflict with other nations?
A. If the US expands east, they'll be at war with the Atlanteans.
B. If the US expands west, they will be in conflict with the Netherlands, Sweden, and Italy.
C. If the US expanded west, they'd be taking over territory claimed by any of the following nations: Britain, Spain, and Russia.
D. If the US expanded west, they'd be taking over territory already claimed by Native Americans, Russia, Britain, and Spain.