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Northwest Ordinance
protected civil liberties and outlawed slavery in the new territories. -
Louisiana purchase
The purchase doubled the size of the United States, greatly strengthened the country materially and strategically, provided a powerful impetus to westward expansion. -
Missouri Compromise
Missouri Compromise was passed in 1820 admitting Missouri as a slave state and Maine as a free state. -
Monroe Doctrine
President James Monroe's seventh annual message to Congress on December 2, 1823. The European powers, according to Monroe, were obligated to respect the Western Hemisphere as the United States' sphere of interest. -
Nullification Crisis
Nullification crisis, in U.S. history, confrontation between the state of South Carolina and the federal government in 1832–33 over the former's attempt to declare null and void within the state the federal Tariffs of 1828 and 1832. -
Texas Annexation
The Texas annexation was the 1845 annexation of the Republic of Texas into the United States of America, which was admitted to the Union as the 28th state -
Oregon Treaty
The treaty established the 49th parallel as the border between Britain and the United States -
Mexican Cession
To the United States by Mexico at the end of the Mexican War. The terms of this transfer were spelled out in the Treaty of Guadalupe Hidalgo of 1848. -
Compromise of 1850
As part of the Compromise of 1850 the Fugitive Slave Act was amended and the slave trade in Washington, D.C. -
Kansas-Nebraska Act
It allowed people in the territories of Kansas and Nebraska to decide for themselves whether or not to allow slavery within their borders. -
Battle of Fort Sumter
The first battle of the Civil War -
Battle of Bull Run
Was the first major battle of the American Civil War and was a Confederate victory. -
Battle of Antietam
One of the most bloodiest battles in the war. -
Emancipation Proclamation
President Abraham Lincoln issued the Emancipation Proclamation on January 1, 1863, as the nation approached its third year of bloody civil war. The proclamation declared "that all persons held as slaves" within the rebellious states "are, and henceforward shall be free." -
Battle of Vicksburg
Gave the Union control of the Mississippi River in the American Civil War -
Battle of Gettysburg
The battle involved the largest number of casualties of the entire war and is often described as the war's turning point. -
Gettysburg Address
Lincoln's speech was to dedicate a plot of land that would become Soldier's National Cemetery. -
Sherman’s March to the Sea
Was to frighten Georgia's civilian population into abandoning the Confederate cause. -
13th amendment
The 13th amendment abolished slavery in the United States -
14th amendment
The 14th amendment extended liberties and rights granted by the Bill of Rights to former slaves. -
Congressional Reconstruction
Was the period after the Civil War in which the federal government enacted and attempted to enforce equal suffrage on the ex-Confederate states. -
15th amendment
The 15th amendment granted African American men the right to vote. -
Plessy v. Ferguson
Supreme Court decision that upheld the constitutionality of racial segregation under the “separate but equal” doctrine.