A map of the Oregon Country showing the adjustments to the boundaries between 1819-1846, including the southern boundary established by treaty with Spain in 1819, and the boundary dividing the territory between the United States and...

A map of the United States and territories showing the free areas and areas open to slavery as established by the Missouri Compromise of 1820.

A map of the Mississippi Territory at the time of the Creek War between the Creek Nation (Muscogee) and the Cherokees, Choctaws, and eventually the United States (1813-1814). The map shows the U.S. forts in the area (Armstrong, Strother,...

A map of Lake Erie showing the site at the western end of the lake of the Battle of Put-in-Bay on September 10, 1813 between the United States Navy under Oliver Perry and the British Royal Navy.

A map of the Northwest Territory of the United States north of the Iroquois or Ohio River in 1787 showing early forts and settlements with dates of establishment given, rivers, and the general territories of the Illinois, Miami, and...

A map of territory claimed by Texas when admitted into the Union, 1845. The map is color-coded to show the frontiers of Texas with the United States and Mexico, the territory in the east covered under the old Spanish land grants, and the...

A map of the Pacific region of the United States west of the Rocky Mountains in 1841-1850. The map shows the Old Spanish Trail from Los Angeles to Santa Fe, the Pioneer Route from the Platte River to San Francisco, the routes of Fremont...

A map of the United States and Pacific Ocean showing the development of American interests in the Pacific from the early exploration of Oregon Country in 1791 to the formal annexation of the Midway Islands and the Panama Strip in 1903....

A map of the United States showing the historic sea and land routes taken by famous explorers across North America, from the coastal explorations of Cabot and Corte Real in the Northeast, Ponce de Leon and Alvarez in Florida and the Gulf...

A map of the western United States in 1840-1850 showing the Oregon Trail and Santa Fe, the two principal overland routes from Independence, Missouri, to the western territories and the Pacific. The map shows the territory boundaries,...

The United States, showing the growth of territory from 1783 to 1867.

A map of the American Northwest Territory showing the boundary developments in 1790, 1800, and 1810. The upper left map shows the territory acquired by the United States from Britain after the Revolutionary War as established by the...

A map of the United States showing the extent of the country prior to, and after the Louisiana Purchase from France in 1803.

World maps of the Colonial Empires of 1914 as well as their revenues during that time period. There are also maps depicting urban growth, type of government, wars and atrocities, and living conditions of the world in 1900.

World maps of the Colonial Empires of 1914 as well as their revenues during that time period. There are also maps depicting urban growth, type of government, wars and atrocities, and living conditions of the world in 1900.

The National Humanities Center presents collections of primary resources compatible with the Common Core State Standards historical documents, literary texts, and works of art thematically organized with notes and discussion questions....

This lesson looks at the process whereby a policy of assimilation gave way to one of overt removal under President Jackson.

This site explains how as westward expansion grew, more and more Indians encountered settlers, ranchers and miners who sought life, land, and riches out West. Conflicts between settlers and Indians soon involved the federal government...

Thomas Hart Benton (3/14/1784 - 4/10/1858) was a U.S. Senator from Missouri and a staunch advocate of westward expansion of the United States. He served in the Senate from 1821 to 1851, becoming the first member of that body to serve...

A map from 1919 showing the mean center of population of the United States, calculated at each census from 1790 to 1900. The map illustrates the westward expansion of territory and migration during the period. "The center of population...

A map of the United States between 1840 and 1850 showing the states and territories, and the principal routes of transportation and westward migration during the period. The map shows frontier forts, outposts, and settlements, the...

Built in 1844-1847, this was the home of Queen Lili?uokalani, the last reigning monarch of the Hawaiian kingdom, from the time of her marriage in 1862 to her death in 1917. While living here, she saw the monarchy overthrown and Hawai?i...

A major crossroads for Alta California as well as the Westward expansion of the United States. It has several archaeological and historical sites, shared with Arizona across the Colorado River, including Fort Yuma and other state parks.

A map of North America, Central America, and northern South America at the end of the American Revolutionary War (1783). The map is color-coded to show the territory of the United States at the time, British possessions in Canada,...