To be honest. This is why the civil war happened. Some people may have lived in the free states, but Most people fought for their beliefs. Hope I helped.
C - Mestizos
Mestizos are of mixed heritage (Spanish and American). Creoles are European (usually French or Spanish) or African descent born in the West Indies. Missionaries are people of any race sent on a religious (usually Christian) mission. Rancheros works farms or ranches and are of any heritage.
The answer for this is "Compromise of 1850".
The Compromise of 1850 is a set of laws dealing with the issue of slavery. California was admitted as a free state, upsetting the groups in favor of slavery and satisfying those opposing it in the U.S senate. In Addition, California abolished the slave trade by entering the Union as a free (no slavery) state.