University of Oregon
Mapping History Project: Mexican Cession: Political Boundaries
Click on this map to see the boundaries of Mexico, Texas, and the United States before the Mexican Cession, and then click again to see the land ceded to the U.S. after the Treaty of Guadalupe Hidalgo. Be sure to click to see the key...
iCivics
I Civics: Mexican Cession (1848)
Students explore the causes and effects of the Mexican-American war. They will learn about the land was obtained as a result, the Treaty of Guadalupe Hidalgo, the Gadsen Purchase of 1853, and the new international borders.
Curated OER
National Park Service: Chamizal National Memorial
After a long disagreement over the border between Texas and Mexico as the Rio Grande shifted, the Chamizal Treaty was established in 1963. The Chamizal National Memorial marks the border and stands for peace between two countries, two...
Annenberg Foundation
Annenberg Classroom: Treaty Making Authority
Check out this interactive timeline on treating-making authority in the United States.
Digital History
Digital History: Peace
Read about the peace treaty that ended the Mexican War. See that there were some who wanted to annex the whole of Mexico and were disappointed with the terms of the treaty.
Other
Dmwv: The u.s. Mexican War: 1846 1848
Dedicated to the memory of U.S. veterans who fought in the U.S.-Mexican War, this website provides documents, images, maps, and FAQs.
US National Archives
Our Documents: A National Initiative on American History, Civics, and Service
Our Documents is home to one hundred milestone documents that influenced that course of American history and American democracy. Includes full-page scans of each document, transcriptions, background information on their significance, and...
PBS
Pbs: New Perspectives on the West
This in-depth resource presents a history of the American West from pre-Columbian times until World War I with profiles, documents, and images. It encourages visitors to link these into patterns of historical meaning for themselves....
Henry J. Sage
Sage American History: The Republic of Texas and the Mexican American War
Article on the history of Texas framed in a discussion of Spanish colonization to help readers better understand events leading to the Mexican-American War. With bullet pointed facts and links to primary source material.
Texas State Historical Association
Texas State Historical Association: The Frontier Forts of Texas
The system of frontier forts in Texas was established to protect Anglo settlers as well as those moving on westward. This article details the observations of Lt. Col. William Grigsby Freeman, who set out in 1853 to inspect a series of...
Gilder Lehrman Institute of American History
Gilder Lehrman Institute: History by Era: The Age of Jackson
[Free Registration/Login Required] Read about the growth of the United States in population, economy, territory during the Age of Jackson. Named after the dynamic president, Andrew Jackson, the age encompassed much more than Jackson's...
US Army Center
U.s. Army Center of Military History: The Mexican War and After
This site from the U.S. Army's Center of Military History offers a detailed account of the Mexican War and its important battles as well as a description of what occurred after the war.
Texas State Library and Archives Commission
Texas State Library and Archives Commission: Hard Road to Texas 1836 1845: Aftermath the Reckoning
What happened in the 15 years that followed the annexation of Texas? How did the Mexican War end? Read this article to learn about the aftermath of the annexation, and check out primary documents--a "moral map" of the United States and a...
Other
Texas Independence: Timeline of Independence [Pdf]
Beginning with 1821, take a chronological walk through the Texas' road to Independence ending in 1848 with the annexation of Texas by the United States.
Other
Gadsden Purchase: Odd Land Deal
An informal description of the Gadsden Purchase land deal. Details about the personalities and rationale for this agreement.
Other
Course Notes: Us History: 1840 1877: Expansion and Slavery
A list with short descriptions of the issues and events that impacted the expansion of the frontier, with slavery being the most significant issue.
Library of Congress
Loc: America's Story: Westward Expansion and Reform
Part of a longer time line describing the history of the American West, this section covers the period 1829 to 1859 with hyperlinks to stories and people of this time period.
Museum of the City of San Francisco
Virtual Museum of the City of San Francisco: Gold Rush Chronology 1846 1849
A nice timeline of events that occurred from 1846 to 1849 in the California Gold Rush. Hyperlinks to additional information. From the Virtual Museum of the City of San Francisco.
Independence Hall Association
U.s. History: The Mexican American War
The Mexican-American War fulfilled James Polk's desire to acquire the territory of New Mexico and California from Mexico. See how the fight was provoked, and read about Stephen Kearny's actions in New Mexico and John Fremont's in...
Khan Academy
Khan Academy: Ap Us History: 1865 1898: Chinese Immigrants and Mexican Americans
Discusses the conflict with Mexican American and Chinese groups as white settlers pushed westward in the nineteenth century. Explains what brought so many Chinese immigrants to America and the roadblocks and discrimination that they had...
Oklahoma State University
Chronicles of Oklahoma: A Brief History of the Fort Sill Apache Tribe [Pdf]
A comprehensive description of the tribe which came from Warm Spring Apache Tribe, the Chiricahua Apache Tribe, and the Nednai Apache Tribe. The article provides details on these three tribes.
Museum of the City of San Francisco
The Virtual Museum of the City of San Francisco: The Mexican American War
The Virtual Museum of the City of San Francisco displays the history of the Mexican-American War, including an explanation of border changes in the California and Mexico areas. It also discusses the idea of Manifest Destiny.
Khan Academy
Khan Academy: Richard Caton Woodville, War News From Mexico
Richard Caton Woodville's "War News From Mexico" is an example of an American genre painting. It depicts a group of people reacting to news about the Mexican-American War. View pictures of this painting and read the backstory in this essay.
Siteseen
Siteseen: American Historama: Gadsden Purchase
Provides an overview and detailed facts about the Gadsden Purchase, the land acquisition from Mexico of 30,000 sq. miles in Arizona and New Mexico for $10 million dollars.