I'm pretty sure that (A) is the correct answer
Answer: the British promised to give the western land back to the native American
Explanation: the white settlers keep going westward that tried to push them back
A Roman legion (from Latin legio "military levy, conscription", from legere "to choose") normally indicates the basic ancient Roman army unit recruited specifically from Roman citizens. In reference to the early Roman Kingdom (as opposed to the Roman Republic or Empire), "the legion" means the entire Roman army.