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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.
The 13 British North American provinces of Virginia, Massachusetts Bay, Maryland, Connecticut, Rhode Island and Providence Plantations, New York, New Jersey, New Hampshire, Pennsylvania and Delaware, South Carolina, North Carolina, and Georgia united as the United States of America declare their independence from the Kingdom of Great Britain on ...
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 ...
The following table is a list of all 50 states and their respective dates of statehood. The first 13 became states in July 1776 upon agreeing to the United States Declaration of Independence, and each joined the first Union of states between 1777 and 1781, upon ratifying the Articles of Confederation, its first constitution. [6]
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.
The United States was a notable exception to this; barring Pearl Harbor and some minor incidents, the U.S. had suffered no attacks upon its territory. [162] The United States and the Soviet Union, which, despite the devastation of its most populated areas, rebuilt quickly, found themselves the world's two dominant superpowers. [163]
The president of the United States is the head of state and head of government of the United States, [1] indirectly elected to a four-year term via the Electoral College. [2] The officeholder leads the executive branch of the federal government and is the commander-in-chief of the United States Armed Forces. [3]
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