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In what year was the hair straightener invented?

While the person who invented hair straighteners is unknown, Madam C.J. Walker is credited with teaching African-American women how to use the hot comb to straighten their hair. She also invented a line of hair care products specifically for African-American women in 1905. In doing so, she became one of the first American women to be considered a self-made millionaire.

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When was snowboarding invented?

At first, snowboarding drew mainly skateboarders, surfers and brave individuals who enjoyed a challenge. However, by the late 1970s and early 1980s, snowboarding became a bona fide winter sport, with innovators such as Jake Burton Carpenter and Dimitrije Milovich developing snowboard designs incorporating a variety of materials, as well as snowboarding accessories. By the 1990s, the snowboarders at ski resorts sometimes outnumbered the traditional skiers.

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What were the economic effects of the Montgomery Bus Boycott?

The Montgomery Bus Boycott lasted for 381 days from Dec. 5, 1955 to Dec. 20, 1956. African-Americans refused to ride the city's buses following the arrest of activist Rosa Parks, who refused to give her seat to a white rider on a city bus on Dec. 1, 1955. City laws at the time required African-Americans to sit in the back half of the bus and to give up their seats to white riders if the front half of the bus was filled. Parks was arrested for refusing to yield her seat.\nOn Dec. 5, 1955, African-American leaders met and formed the Montgomery Improvement Association. The MIA developed the ..

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Why did Egyptians stop building pyramids?

The limestone that the pyramids are made of expands and contracts in the changing temperatures of the desert. As the limestone expands, it causes the stones to move slightly. Over time this movement causes the stones to shift position and grind down. As the rocks move, the cladding, the smooth coating on the outside of the pyramid, begins to crack and eventually falls off. The Red Pyramid and Great Pyramid, built later than the Bent Pyramid that James originally studied, may have cracked earlier because they were built with no voids between the rocks which means that they could not absorb the ..

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How was Japanese feudalism different from European feudalism?

One of the defining characteristics of feudalism is the relationship between the warrior class/nobility and the peasantry. In Japan, moral beliefs centered around filial piety and the idea of duty. The daimyo and samurai had a moral obligation to protect the peasants living on their land, while the peasants had a moral obligation to respect and pay food taxes to the nobility in return. Neither party, culturally speaking, could sway from this arrangement. By contrast, the knights and peasants of Europe viewed feudalism as a reciprocal benefit, but were more flexible on the moral aspect.\nThe sa..

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Which war in history claimed the most lives?

Countries that suffered the most casualties include China, Germany and the Soviet Union. The war pitted the Allies – China, Great Britain, the Soviet Union and the United States – against Germany, Italy and Japan, the Axis powers. World War II was ignited by Adolf Hitler's 1939 invasion of Poland and ended with surrender from Germany and Japan in 1945. The war involved roughly 70 million soldiers from more than 30 countries worldwide.

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What was Nelson Mandela fighting for?

Prior to being elected president of South Africa, Nelson Mandela was imprisoned and punished for his stance as an anti-apartheid activist. Black South Africans who fought against this system of racial oppression were regularly punished by the ruling white government, though this punishment was not an effective deterrent for activists such as Mandela. Even though Mandela was imprisoned for almost 30 years, he remained a major figure in the fight for racial equality and democracy in South Africa. Although Mandela and other black South Africans were treated horribly by the occupying white governm..

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What important events are on a timeline of the Eisenhower Presidency?

Shortly after Eisenhower's inauguration, U.S.-Soviet relations shifted with the death of Josef Stalin on March 3, 1953. Turmoil resulting from the troubled succession of a leader for the U.S.S.R. prevented improvement, deepening the Cold War conflict. Eisenhower's containment strategy for Communism, introduced during Truman's leadership, was followed through the negotiation of peace in the Korean War in July the same year. Additionally, covert actions by the CIA, supported by Eisenhower, saw the overthrow of the leadership in Iran in 1953 and of Guatamala in 1954, both to preven..

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What important events happened in 1962?

The Cuban missile crisis was considered a crisis in the eyes of US president John F. Kennedy because it could have sparked a nuclear war, endangering the safety of the entire world. According to JFKLibrary.org, the event resulted in his signing of the Limited Nuclear Test Ban Treaty the following year, when he stated, "For, in the final analysis, our most basic common link is that we all inhabit this small planet. We all breathe the same air. We all cherish our children's future. And we are all mortal."\nThe death of Marilyn Monroe, one of the biggest sex symbols in history, was a result ..

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What was the religion of the Han dynasty?

The Han dynasty existed for over four centuries, from 206 B.C. to A.D. 220. It was succeeded by the Three Kingdoms dynasty and preceded by the Qin dynasty. The Han dynasty was founded by Liu Bang.\nThe advancement of science and technology accelerated during the Han dynasty. Concepts such as negative numbers were introduced into mathematics. Additionally, paper making and the nautical steering rudder were developed. The salt and iron industries were nationalized during the Han dynasty.

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