1835 how many people immigrated to the west in the United States?

After the war of independence, the American ruling group has always regarded the expansion to the west as a national policy, especially the slave owners group in the south, and even acted as a deep-water bomb for territorial expansion. The number of immigrants in the western United States has surged, with 1835 reaching 30,000, as far away as California and New Mexico. Migrants often have disputes with the Mexican government.