Mycenaean Civilization was at its height from 1400 bc to 1200 bc.
An estimated 50,000 slaves escaped as a direct impact of <span>The Underground Railroad. The Underground Railroad was a network of hiding places and secret routes that enabled African-American slaves to escape. It led them to either Canada or a free state. This network was not literally an "underground railroad" but a resistance that was hidden from public knowledge. </span>
Between a coalition, it stopped the Northeast Indian War.