Why was there a need for a compromise in 1850?

The Compromise of 1850 consists of five laws passed in September of 1850 that dealt with the issue of slavery and territorial expansion. In 1849 California requested permission to enter the Union as a free state, potentially upsetting the balance between the free and slave states in the U.S. Senate. Senator Henry Clay introduced a series of resolutions on January 29, 1850, in an attempt to seek a compromise and avert a crisis between North and South. As part of the Compromise of 1850, the Fugitive Slave Act was amended and the slave trade in Washington, D.C., was abolished. Furthermore, California entered the Union as a free state and a territorial government was created in Utah. In addition, an act was passed settling a boundary dispute between Texas and New Mexico that also established a territorial government in New Mexico.

To resolve conflict over what states would be a slavery free state or not in the states that were being forming form the Mexican American war.