| A | B |
| frontier | Unsettled or sparsely settled area occupied largely by Native Americans |
| Great Plains | Area from the Missouri River to the rocky Mountains. |
| Homestead Act | Passed in 1862, this law offered 160 acres of land free to anyone who agreed to live on and improve the land for five years. |
| Dawes Act | A law, enacted in 1887, that distributed reservation land to individual owners. |
| Gilded Age | An era during the late 1800s of fabulous wealth |
| urbanization | Growth of cities resulting from industrialization. |
| new immigrants | A person from southern or eastern Europe who entered the United States after 1900. |
| mass culture | A common culture experienced by large numbers of people. |
| leisure | Free time. |
| vaudeville | A form of live stage entertainment with a mixture of songs, dance, and comedy. |
| ragtime | A blend of African-American and European musical forms. |
| Jim Crow | Laws meant to enforce separation of white and black people in public places in the South. |
| segregation | Separation, especially of races. |
| Plessy v. Ferguson | An 1896 case in which the Supreme court ruled that separation of the races in public accommodations was legal. |
| NAACP | National Association for the Advancement of Colored People played a major role in ending segregation in the 205h century |
| Populist Party | Also known as the People’s Party and formed in the 1890s, this group wanted to policy that would raise crop prices. |
| William Jennings Bryan | Democrat’s and Populist’s Parties candidate for president in 1896. |
| progressivism | An early 20th-century reform movement seeking to return control of the government to the people, to restore economic opportunities, and to correct injustices in American life. |
| Theodore Roosevelt | Became president after William McKinley was assassinated in 1901, first progressive president, he was reelected in 1904 |
| William Howard Taft | President in 1909 oversaw the passage of two progressive amendments to the Constitution, the 16th and 17th. |
| Woodrow Wilson | President in 1913 and during World War I, he had a plan for lasting peace called the Fourteen Points. |
| imperialism | The policy by which stronger nations extend their economic, political, or military control over weaker nations or territories. |
| Spanish-American War | A war in 1898 that began when the United States demanded Cuba’s independence from Spain. |
| yellow journalism | A style of journalism that exaggerates and sensationalizes the news. |
| Platt Amendment | A result of the Spanish-American War, which gave the United States the right to intervene in Cuban affairs when there was a threat to “life, property, and individual liberty.” |
| Panama Canal | A shortcut through Panama that connects the Atlantic and the Pacific oceans. |
| Roosevelt Corollary | A 1904 addition to the Monroe doctrine allowing the United States to be the “policeman” in Latin America. |
| Fourteen Points | President Woodrow Wilson’s goals for peace after World War I. |
| Great Migration | The movement of African Americans between 1910 and 1920 to northern cities from the South. |