America in the 1910s
A Decade of War, Reform and Rapid Industrial Change
In the 1910s, the United States moved from a growing industrial power to a nation deeply involved in world affairs.
War and Diplomacy
World War I began in Europe in 1914, and the United States remained neutral for nearly three years. That changed in April 1917 when Congress declared war on Germany at President Woodrow Wilson’s request.
American troops joined the fight in 1918 as the U.S. government expanded the armed forces through the Selective Service Act of 1917. On the home front, the government asked industries and citizens to support the war effort through conservation and increased production. The fighting ended with the armistice on Nov. 11, 1918, a date still observed as Veterans Day.
After the war, Wilson promoted a plan for a League of Nations as part of the Treaty of Versailles. The Senate did not ratify the treaty, and the United States did not join the League, reflecting a national debate about how closely the country should tie itself to European commitments.
Votes for Women
The women’s suffrage movement pressed ahead through marches, lobbying and organizing. Advocates built on decades of work by local and national groups, arguing that voting rights should match women’s expanding public roles.
That long effort reached a milestone in 1919 when Congress approved the 19th Amendment. The amendment was ratified by the states in 1920, granting women the right to vote nationwide and reshaping American elections.
Factories and Mobilization
Industrial capacity was central to the war effort. Railroads, steel mills, shipyards and munitions plants increased output, supported by federal coordination and contracts that linked government and business.
The workforce changed as demand rose. Many women took on paid work connected to war production and services, and the Great Migration brought large numbers of Black Americans from the rural South to Northern and Midwestern cities, seeking jobs and a different daily life than the one offered by Jim Crow segregation.
Peace and Readjustment
The end of the war brought relief and uncertainty. Millions of service members returned home, and the economy shifted away from wartime production. The country also faced public health trauma when the influenza pandemic of 1918 swept through communities, striking military camps and cities alike.
By 1919, labor unrest and political tensions were in the headlines, along with debates over immigration and national identity.