This document discusses immigration and reform movements in the United States between 1820-1850. It saw a large influx of immigrants from Ireland, Germany, and other parts of Europe. The Irish made up the largest group and faced difficult conditions during travel and upon arrival. They established tight-knit communities but faced anti-Catholic and anti-immigrant sentiment. Meanwhile, reform movements grew including transcendentalism, temperance, education, women's rights, and abolitionism, reflecting social changes in this period.