Instructional Video2:18
Makematic

The Gadsden Purchase

K - 8th
In 1853, the United States paid Mexico $10 million for less than 30,000 square miles of land, facilitating the completion of a Southern transcontinental railroad and decades of economic growth.
Audio
Smithsonian Institution

National Museum of American History: A More Perfect Union

9th - 10th
A comprehensive site from the National Museum of American History about the rights of citizens and the power of states as seen in the Japanese American internment. Primary resources abound in interactive multimedia galleries.