In 1818, the Missouri Territory applied for statehood as a slave state. Thomas Jefferson wrote on the time that the, “momentous query, like a firebell in the night, awakened and filled me with terror.” The ensuing Missouri compromise averted the split among the states for a time as it allowed Missouri to go into the union as a slave nation and Maine to simultaneously join as a unfastened kingdom. Although americans hoped the dispute over slavery became settled, John Quincy Adams called the compromise “a name web page to a exceptional tragic quantity.”
The aftermath of the Mexican-American war proved Adams right. The big territory awarded the usa, rising from the struggle positive, blanketed the territory that would become Texas, New Mexico, Arizona, and California. A Pennsylvania congressman, David Wilmot, was decided to maintain the newly annexed territory free. He delivered a bill called the Wilmot Proviso that disallowed slavery in any part of the territory. The bill did no longer pass but laid the floor paintings for some other compromise.