Final answer:
The backcountry people addressed their issues by creating self-governing communities and militias, particularly in response to the British Crown's restrictions on westward expansion and imposing taxes.
Step-by-step explanation:
People in the backcountry attempted to solve their concerns primarily by forming self-governing communities and militias. They were driven by the dissatisfaction with the British Crown's arbitrary rules and taxes, especially after the Proclamation Line of 1763 prohibited settlement west of the Appalachian Mountains. Despite expectations for land after the French and Indian War, the British policies frustrated colonists who sought economic opportunities and were already struggling with debts from war. The colonists, resisting these impositions and aiming to assert some control, established means of self-governance that would eventually contribute to the larger movement towards independence.