The Wilmot Proviso was a proposition during the Mexican-American War which is best known for the fight at the Alamo. This proposition meant that if America were to win they would not take the Mexican people who were on the land and turn them into slaves. This was first brought to the eyes of the House of Representative on August 8th in 1846 and would have been able to possibly resolve the Mexican-American War with a two million dollar appropriation.
The Wilmot Proviso was submitted by David Wilmot who was a Democrat and a congressman. The Wilmot Proviso was never passed and is thought of as a contributor to the Civil War along with other events such as the compromise of 1850, Northwest Ordinance, Uncle Tom’s Cabin, Manifest Destiny and more. What was required in order for Wilmot Proviso to be able to pass would be to have at least two thirds of the Senate approve of it which unfortunately never happened. The bill was pushed multiple times and brought in front of the House of Representatives multiple times to try and be passed but was never successful.
Part of the reasoning behind it never being passed was that the Northern senate members were firmly behind the Wilmot Proviso, but the Southern senates where strictly against and did not allow it to pass. As mentioned above, it was never passed by both parties of congress but it is now thought of as basic tenets of the Republican Party. The way in which this brought the Northern and Southern senate against each other is why this is considered to be one of the events that lead up to the civil war. This type of rivalry is what ended up happening between the two sides and ended up causing many deaths.