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What are the primary disadvantages of bipedalism?

The human body has many adaptations to bipedalism, as described by PBS.org. These include the design of the foot as a shock absorber, the double curve of the spine to support weight and enlarged, weight-supporting surfaces of the vertebrae. However, these adaptations do not completely negate the disadvantages of bipedalism. PBS.org notes that humans do experience back injuries and pain as a result of bearing weight on their spines, which originally evolved to serve more as a suspension bridge for the body's organs than a weight-bearing structure.\nA research article published in the journ..

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What role did Italy play in World War II?

Benito Mussolini had territorial and imperial ambitions of his own and saw allying with Germany as a chance to achieve his goals. When Italy joined the war, the main part of the fighting between Germany and the Allies had already moved too far north for the Italians to be much help. But Italy's entrance brought the war to the Mediterranean region. Italy invaded British-occupied North Africa, then invaded Greece without informing Germany, which was eventually forced to intervene in both campaigns with troops that it needed badly elsewhere. Germany took over Yugoslavia in 1941 in order to g..

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How has technology changed over time?

Technology has always been a present force acting in the world. It started out as simple things like tools that were created by the most primitive humans and evolved into other tools that made life easier for the people who created them. In the mid 20th century, the technological advances began to boom. People realized that computers were the way of the future and would make life easier for anyone who used them. Scientists, engineers and computer enthusiasts began to look for new ways to make computers do tasks that would normally be done by humans. This technology eventually led to the introd..

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Who invented the fluorescent light?

Peter Cooper Hewitt built upon the work of Julius Plucker and Heinrich Geissler, who applied electricity to tiny gas particles in a tube to create light. Hewitt created a bluish-green light with a mercury-filled tube. He teamed up with George Westinghouse to become the first team to manufacture it commercially. Thomas Edison applied for a patent in 1896, but his fluorescent light used X-rays to excite the atoms and never sold.

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When did Obama visit Pakistan during his time in office?

President Obama has said that he will not visit Pakistan until it stops allowing jihadist groups to operate within its borders. Although the United States and Pakistan are allies in counter-terrorism efforts, in 2013, the U.S. State Department named Pakistan a terrorist safe haven. Pakistan's unwillingness to crack down on jihadist groups has created instability and has deterred foreign companies from investing in the country.\nGeorge W. Bush was the last U.S. president to visit Pakistan. He visited the country in 2006.

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What was the economy like in the 1920s?

Technological advances had been made in the 1920s, making business more conducive for various countries including Germany, Russia, Japan and other European regions. Things like automobiles, vacuum cleaners, radios, refrigerators, air travel and talking movies were available in abundance making trade much more lucrative and convenient.Even though things were looking good with regards to the general world economy, some of the challenges that arose included an agricultural crisis in the U.S. The country was not able to meet the demands of European countries during the war, prompting a need for ex..

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What did Martin Luther King accomplish?

A Baptist minister and social activist, King took inspiration from peaceful figures such as Mahatma Gandhi. According to the Nobel Prize organization, it was his use of peaceful measures that landed him a Nobel Peace Prize in 1964. At age 35, he was the youngest person to ever receive the prize. Upon learning of the honor, he announced that he would donate the more than $50,000 in prize money to the civil rights movement.\nKing did not let adversity prevent him from pursuing civil rights. According to the History Channel, during the year-long Montgomery Bus Boycott, he was threatened with bodi..

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What are three types of colonial government?

Governors of royal colonies were directly chosen by the sovereign and carried out orders issued by the monarch. In contrast, proprietary and charter colonial governments chose their own leaders.\nProprietary governors were elected by the controlling ownership group of the colony and reported directly to the sovereign. Proprietary governors were given more latitude in determining laws. Charter colonies, which formed self-governance contracts with the ruling monarch, had the greatest freedom to determine their own colonial laws.

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What countries were affected by the Holocaust?

Jews were identified by the Nazis as those with three or four Jewish grandparents or a "mixed breed" with two Jewish grandparents. They were "marked" during this time by the yellow star they were forced to wear on their clothing.\nAfter Poland was occupied in 1941, Jewish civilians from various countries were sent to concentration camps in Belzec, Auschwitz-Birkenau, Chelmno and three other Polish camps in large numbers. Once there, the displaced Jews, as well as large numbers of homosexuals and weak or disabled civilians, were forced into hard labor, although only Jews were killed using poiso..

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Who are some famous women in history?

Georgia O’Keefe ranks as one of the most famous painters of the 20th century. Born in Wisconsin, O’Keefe became associated with the American Southwest due to her prominent paintings of flowers, desert landscapes and bones. O’Keefe spent much of her working life in New Mexico, with a career that spanned more than 60 years and encompassed more than 1,000 works of art.\nPresiding over Russia’s Golden Age, Catherine the Great was the longest-ruling female Russian leader, reigning from 1762 to 1796. Coming into power after a political coup, Catherine reinvigorated Russia, expanding its terr..

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