I believe the answer is the answer is 1776-1781
• George Washington led the revolutionary war after he helped declare independence from England. He served as a delegate to the first Continental congress
• Geography helped people use the land they’ve known, either by hiding or launching clever attacks against the British
• The French helped the Americans by providing ideological underpinnings. They also posed a heftier geopolitical threat to Britain. They provided covert aid as well. They shared troops money and materials to help Americans in the war and they gave the upstart colonists political legitimacy.
• National maturity had dissipated the patriotic haze that long obscured the realities of the war that begun on Lexington Green on April 19th 1775
D.) the gradual breakdown of rock or soil caused by water or wind