Territorial Expansion
Browse timelines in Territorial Expansion.
Showing 1-15 of 20 timelines
Acquisition and Political Status Changes of Puerto Rico (1898–present)
1898 - 2024
Adams–Onís Treaty and the Acquisition of Florida (1819–1821)
1817 - 1822
Alaska Purchase and Territorial Development (1867–1959)
1867 - 1980
American Samoa: Treaties, Cession, and Territorial Administration (1899–present)
1899 - 2025
Annexation of the Republic of Texas and U.S. Integration (1836–1846)
1836 - 1846
Gadsden Purchase and Southern Railroad Negotiations (1853–1854)
1848 - 1856
Indian Removal, Land Cession Treaties, and the Formation of Indian Territory (1815–1907)
1814 - 1907
Louisiana Purchase and Territorial Organization (1803–1821)
1803 - 1821
Mexican–American War and the Mexican Cession (1846–1848)
1846 - 1848
Northwest Territory and the Northwest Ordinance (1787–1803)
1784 - 1803
Oregon Treaty and American Settlement of the Oregon Country (1846–1860)
1818 - 1855
Overthrow of the Hawaiian Kingdom, Annexation, and Territorial Period (1893–1959)
1887 - 1959
Panama Canal Zone: Acquisition, Control, and Transfer (1903–1999)
1902 - 1999
Pathways from Organized Territory to Statehood: Examples from the 19th Century (1803–1890)
1787 - 1889
Philippine–American War and U.S. Colonial Rule in the Philippines (1898–1946)
1898 - 1946