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The Progressive Era (1890s–1920s [1] [2]) was a period in the United States during the early 20th century of widespread social activism and political reform across the country. [ 3 ] [ 4 ] Progressives sought to address the problems caused by rapid industrialization, urbanization, immigration, and political corruption as well as the enormous ...
The 20th century in the United States refers to the period in the United States from 1901 through 2000 in the Gregorian calendar. For information on this period, see: History of the United States series: History of the United States (1865–1918) History of the United States (1918–1945) History of the United States (1945–1964)
Teddy Roosevelt, the Bull Moose, led American progressives in the early 20th century. 1906 – San Francisco earthquake; 1907 – Oklahoma becomes a state; 1907 – Gentlemen's Agreement; 1907 – Coal mine explodes in Monongah, West Virginia, killing at least 361. Worst industrial accident in American history. 1908 – Ford Model T appears on ...
November 1: The United States successfully detonates the first hydrogen bomb, codenamed "Ivy Mike", at Eniwetok Atoll in the Marshall Islands in the central Pacific Ocean, with a yield of 10.4 megatons. Development of the first effective polio vaccine by Jonas Salk. The Mau Mau Uprising begins in Kenya. The Slansky Trial in Czechoslovakia.
A People's History of the United States; Cyclopaedia of Political Science, Political Economy, and the Political History of the United States; Land of Promise: An Economic History of the United States; The History of the United States of America 1801–1817; Oxford History of the United States; The Penguin History of the United States of America ...
In the early 20th century, Mexico was troubled by two civil wars, increasing Mexican immigration to the United States five-fold, from twenty-thousand new arrivals every year in 1910, to between 50,000 and 100,000 new arrivals every year by the end of the Mexican Revolution in 1920. [67]
The United States became the world's leading industrial power in the 20th century, largely due to entrepreneurship, industrialization, and the arrival of millions of immigrant workers. A national railroad network was completed, and large-scale mines and factories were established.
In the early 20th century, politicians of the Democratic and Republican parties, Lincoln–Roosevelt League Republicans (in California) and Theodore Roosevelt's Progressive ("Bull Moose") Party all pursued environmental, political and economic reforms. Chief among these aims was the pursuit of trust busting, the breaking up very large ...