The study resource from Khan Academy provides a video lesson for Period 7: 1890-1945 in American History. This lesson discusses President Woodrow Wilson's Fourteen Points. This resource is designed as a review for the AP US History Test.

Test your knowledge of World War I with this crossword puzzle game.

This site offers a brief history of the discovery and application of atomic and nuclear energy - both military and peaceful. It follows the spread of nuclear development among the major world players of the 20th century. Great site for...