13 Original Colonies

Method: Treaty (Declaration of Independence)

Date: July 4th, 1776

Country acquired from: Great Britain

Northwest & Southwest Territories (from Appalachian Mountains to Mississippi River)

Method: Treaty (Treaty of Paris)

Date: 1783

Country acquired from: Great Britain

Info: This territory was acquired at the end of the American Revolutionary War through the Treaty of Paris in 1783, which marked the official end of the war between the United States and Great Britain

Louisiana Purchase

Method: Treaty (Louisiana Purchase Treaty)

Date: 1803

Country acquired from: France

Info: The Louisiana Purchase occurred in 1803 when the United States (Thomas Jefferson) purchased a vast territory from France, doubling the size of the nation.

Red River Basin

Method: Treaty (Convention of 1818)

Date: 1818

Country acquired from: Great Britain

Info: The Convention of 1818 between the United States and Britain resolved border issues in the Red River Basin

Adams-Onis Treaty

Method: Treaty

Date: 1819

Country acquired from: Spain

3 key elements:

1. The United States acquired Florida from Spain

2. The boundary between Spanish-held Mexico and the United States was established along the Sabine River and the Red River

3. United States agreed to renounce any claims to Texas in exchange for Spanish recognition of the U.S. claim to the Oregon Country

Portions of Northern Maine & Minnesota

Method: Treaty (Webster-Ashburton Treaty)

Date: 1842

Country acquired from: Great Britain

Info: The Webster-Ashburton Treaty of 1842 resolved a border dispute between the United States and Britain

Oregon Territory

Method: Treaty (Oregon Treaty)

Date: 1846

Country acquired from: Great Britain

Republic of Texas

Method: Treaty (Treaty of Annexation)

Date: 1845

Country acquired from: Mexico

Mexican Cession

Method: Treaty (Treaty of Guadalupe)

Date: 1848

Country acquired from: Mexico

Gadsden Purchase

Method: Treaty of Gadsden

Date: 1853

Country acquired from: Mexico

Info: The United States bought a strip of land in what is now southern Arizona and southwestern New Mexico from Mexico to facilitate the construction of a southern transcontinental railroad route

3 Key Elements of Missouri Compromise:

1. Missouri's Admission as a Slave State

   1. allowed Missouri to enter the Union as a slave state, which was a source of controversy since it would upset the balance of power between slave states and free states in the U.S. Senate

2. Maine's Admission as a Free State

   1. To maintain a balance between slave and free states in the Senate, Maine was admitted as a free state at the same time as Missouri

3. The 36°30' Line

   1. South of this line, slavery was allowed in the new territories, and north of it, slavery was prohibited

https://www.educaplay.com/learning-resources/16712231-apush_period_5_map_quiz.html

https://www.southamptonschools.org/site/handlers/filedownload.ashx?moduleinstanceid=1227&dataid=25228&FileName=The%20Acquisitions%20of%20U.S.%20territories.pdf