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1717 Swim fins. Swim fins, also known as fins, or flippers, are blade-shaped extensions worn on feet or hands for use in water. They aid movement in aquatic sports such as swimming, surfing, and underwater diving. Swim fins are typically made of rubber or plastic. Benjamin Franklin invented wooden swim fins in 1717. [10]
Timeline of United States inventions (1890–1945) Robert H. Goddard (1882–1945), the American physicist and inventor who built and launched the world's first liquid-propellant rocket on March 16, 1926. [1] Goddard held 214 patents for his inventions and pioneering innovations in liquid-propelled, guided, and multi-stage rockets. [2] This ...
Timeline of United States inventions (before 1890), before the turn of the century. Timeline of United States inventions (1890–1945), before World War II. Timeline of United States inventions (1946–1991), during the Cold War. Timeline of United States inventions (after 1991), after the Fall of the Soviet Union.
The Great Awakening was a series of religious revivals in American Christian history. Historians and theologians identify three, or sometimes four, waves of increased religious enthusiasm between the early 18th century and the late 20th century. Each of these "Great Awakenings" was characterized by widespread revivals led by evangelical ...
With the invention of the cotton gin by Eli Whitney in 1794, American slaveholders had the means to make cotton production significantly more profitable. The era of King Cotton was underway by the early 1800s to such an extent that by the mid-19th century, southern slave plantations supplied 75% of the world's cotton. The introduction of the ...
e. The American Enlightenment was a period of intellectual and philosophical fervor in the thirteen American colonies in the 18th to 19th century, which led to the American Revolution and the creation of the United States. The American Enlightenment was influenced by the 17th- and 18th-century Age of Enlightenment in Europe and distinctive ...
Samuel Slater (June 9, 1768 – April 21, 1835) was an early English-American industrialist known as the "Father of the American Industrial Revolution ", a phrase coined by Andrew Jackson, and the "Father of the American Factory System". In the United Kingdom, he was called "Slater the Traitor" [1] and "Sam the Slate" because he brought British ...
At the time of the American founding, there were about half a million slaves in the United States, mostly in the five southernmost states, where they made up 40% of the population. Many of the leading American founders – most notably Thomas Jefferson, George Washington, and James Madison – owned slaves, but many others did not. Benjamin ...