Answer:
Economic Impact
Workers' wages skyrocketed as arable land lay fallow; landlords, desperate for people to work their land, were forced to renegotiate farmers' wages. Famine followed. Widespread death eroded the strict hereditary class divisions that had, for centuries, bound peasants to land owned by local lords.
The fact of isolationism and they had already purchased Hawaii and Alaska, the manifest destiny was about moving west, when you are too far west you can’t go west or else your drown in Pacific Ocean
It prevented the settlers from moving West of the Appalachian Mountains, hope this helps!!
It allowed them to make their own laws separately from Britian.
Music was a huge theme for The Harlem writers back then