Take a look at the need for American labor during World War I. It provided second-class citizens, such as women and African Americans, a brief opportunity for better jobs that would help foment in them a desire for more and equal...

This timeline detail American women's involvement in World War I.

This slideshow will explore the reasons the United States joined into fighting during World War I. Explore the role Woodrow Wilson had during the war, the Treaty of Versailles, and the creation of the League of Nations.

Interactive timeline chronicles events of World War I from 1914 to 1920.

Read this brief essay about the African Americans who volunteered to serve during World War I, four thousand of whom fought alongside the French. Included is a photo essay with twelve photographs with descriptions.

Photographic view of some of the key items from the exhibition launched by York Castle Museum in 2014 on the 100th anniversary of the outbreak of World War I.

World War I Image Archive offers a geat collection of photographs from World War I. Categorized by topic.

An interesting site that looks at World War I from a very personal level by looking at the post cards of the countries involved in the war as well as a site for World War I poetry. Hyperlinks help you navigate the extensive information.

FirstWorldWar.com offers a table of contents of the battles in World War I that took place on the Palestine Front.

A collection of images of twenty figures who played key roles in the buildup to World War I.

A broad selection of images featuring World War I can be found on this site by Calisphere. By clicking on individual images you'll find high quality photographs and image information.

Explore the diary of Private Homer Simpson that he kept during World War I. Entries are dated from April 1918 when he received a notice to report through June 1919 when he was discharged.

Photographic exhibition showcases primary source documents and artifacts from World War I on display in the Central Museum of the Great Patriotic War.

Original posters from the leading countries involved in World War I.

With the use of country flags and benchmark years, this clever illustration shows the declarations of war during the course of World War I.

Part of a larger site on WWI, Weapons of War gives a detailed review of weapon technology. Thorough information is provided on bayonets, flamethrowers, grenades, machine guns, pistols, poison gas, rifles, tanks, and trench mortars.

Interactive and animated maps and timelines of historical events and time periods in American history from pre-European times until post-World War II.

Check out a comprehensive slideshow that dives into the key components of the American government which the people disagreed with following World War I.

This site from Trenches on the Web gives an overview of the different types of artillery used in World War I. Provides several thumbnail images of rail guns, howitzers and other forms of artillery, which can be enlarged by clicking on them.

Several examples of propaganda promoting the purchase of war loans in Germany during World War I. Captioned thumbnail images can be enlarged for viewing by clicking on them.

Pictorial narrative of Portugal's role and position in the Great War. The exhibition shows the main events of the history and impact of the Great War in Portugal.

An extensive amount of aviation photographs from WWI. There is also a link to introductory notes on aviation and aviators in the war.

View the iconic "I Want You" poster, versions of which were used to recruit forces for the U.S. armed services during both world wars. Also view the poster in context, with other posters and broadsides used to send Americans to war.

Emory University provides a description and image of Sargent's painting "Gassed." Provides an artistic depiction of World War I.