Diocletian and Constantine were famous as the people who completely reformed the military system and created a new system of government, which gave new life to the late roman empire.
The American civil war was from <span>April 12, 1861 – May 9, 1865</span>
It could be argued that as its intellectual voice, "Langston Hughes" became the leader of the Harlem Renaissance, although of course there were many other prominent leaders as well.
It didn't leave it stronger but built it to become better than what it was, it started to build amendments for all people but it started the industrial revolution in u.s