Final answer:
George Washington responded to problems on the western frontier by using both military and diplomatic strategies to address threats from the Indians, British, and Spanish governments.
Step-by-step explanation:
George Washington responded to problems on the western frontier by relying on both military and diplomatic strategies. He saw the failure to resolve issues on the frontier as problematic for the nation's security and economic development. To address threats to the United States' territorial integrity from the Indians, British, and Spanish governments, Washington used the military to deal with the Indians and diplomats to handle relations with Britain and Spain. His goals were to achieve peaceful settlement of western land and maintain access to the Mississippi River for economic purposes.