Jews. Because they went through a lot.
US government and industry forged a close working relationship to allocate resources effectively using rationing, war bonds and businesses retooled from peacetime to wartime production.
In September of 1787, it was sent to the states for ratification. Nine of the 13 states would have to ratify it for the Constitution to become effective for those ratifying states. The future was not certain at all—a debate began among the states over ratification.
The Civil War was from 1861-1865 which is 4 years.