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On May 15, 1800, Congress stopped working in Philadelphia and started the move to the new Federal District. -
Thomas Jefferson is inaugurated as the third president of the United States in Washington, DC. Thomas Jefferson was an American statesman, philosopher, diplomat, lawyer, and architect. -
The United States paid France $15 million for the Louisiana Territory. This goes west from the Mississippi River to the Rocky Mountains. The US almost doubles in size. -
James Madison was an American statesman, diplomat, expansionist, philosopher, and Founding Father. He served as the 4th president of the United States from 1809 to 1817. -
The War of 1812 started when America declared war on Britain because the British interfered with the shipping of American maritime and the westward expansion. Britain ended up winning this war. -
This compromise came about to maintain the balance between free and slave states. Maine, formerly part of Massachusetts, is admitted as a free state so that Missouri can be called a slave state; except for Missouri, slavery is prohibited in the Louisiana Purchase. -
U.S. Constitution goes into effect, and was approved by nine states. -
President Jackson signed the act which forced the removal of Native Americans, living in the eastern part of the country, to have to move west of the Mississippi River. By 1830s, Mr. Jackson moved over 50,000 Native Americans. -
The Gold Rush started when gold was discovered at Sutter's Mill in California. The gold rush reaches its height the following year. -
The Mexican War starts when the U.S. declares war on Mexico in effort to gain California and other territory in Southwest. The Mexican war concludes with Mexico signing of Treaty of Guadalupe Hidalgo. This treaty makes Mexico recognize Rio Grande as their new boundary with Texas and, for $15 million, agrees to cede territory comprising present-day California, Nevada, Utah, most of New Mexico and Arizona, and parts of Colorado and Wyoming.