Between 1840 and 1850, the United States gained one-third more land than it had previously, achieving its expansionist goal of stretching from the Atlantic to the Pacific. Briefly discuss three major land acquisitions made during that decade. Include important events and their final outcomes, and outline which lands were added to America. Solution Texas, Oregon territory, and California Texas- long been attractive to white southerners. Cheep land and good for cotton. Oregon Terr.- disputed between Britain and the U.S.. Oregon trail....conflict with Indians California- the gold rush drew people west....railroads....