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1801-1872 Secratary of state from 1861 to 1869. He negotiated the United States' purchase of Alaska from Russia in 1867.
United States took over, it later became a state; group of islands (volcanic) in the central Pacific ocean that became a state in 1959
1858-1919 26th President of the United States, from 1901-1909. Lead a group of soldiers called the Rough Riders during the Spanish-American War. As president, he established national forests and parks.
1851-1902 United States Army doctor and medical researcher who proved diseases such as yellow fever and malaria are spread by mosquitoes.
Nickname for African-American soldiers who fought in the wars against Native Americans living on the Great Plains during the 1870s
1838-1914 Naturalist and conservationist who helped establish Sequoia and Yosemite national parks
Reformers who worked to stop unfair practices by businesses and improve the way the government works
Writer or journalist of the early 1900s who uncovered shameful conditions in business and other areas of American life
country in Southern Europe where Archduke Franz Ferdinand of Austria-Hungary was assassinated, leading to World War 1
1856-1924 28th President of the United States, from 1913 to 1921; led the United States during World War 1
1890-1973 Pilot for the United States Army who shot down several German planes during World War 1
World War 1
War fought from 1914 to 1918 between the Central and Allied Powers. The United States joined the Allied Powers in 1917, helping them to victory
Laws introduced by Progressives in the early 1900s designed to solve social problems like alcohol abuse
Policy in which a country prefers to remain neutral and let other countries handle their own affairs
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