Louisiana Purchase
Texas Annexation
Mexican-American War
California Gold Rush
British navy capturing U.S. sailors
Discovery of gold in Georgia
Monroe Doctrine
U.S. annexing Texas
Arizona
California
New Mexico
Louisiana
Abraham Lincoln
Andrew Jackson
James K. Polk
James Madison
13th Amendment
14th Amendment
15th Amendment
19th Amendment
Spain gave up Cuba, Puerto Rico, Guam, Philippines
U.S. annexed Hawaii
U.S. bought Alaska
U.S. gained Texas