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Who invented the first robot?

Researchers are not certain how Archytas powered his robot but believe it was either compressed air or an internal steam engine. Little is known of the device because its existence was not recorded until hundreds of years after its invention. Apparently the robot was attached to a cable that was part of a pulley and counterweight system. In addition to getting an early start in the field of robotics, Archytas is known as the originator of the science of mechanics.

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What was the structure of the Mayan government?

Along with nacoms, noble figures such as kings and priests formed the top of the Mayan government hierarchy. Nacoms served terms of three years. During their tenure as leaders, nacoms oversaw military operations of their governed states. They developed military strategies for short-term and long-term operations, and organized troops for fights. Mayan city-states lacked standing armies, but called reserve soldiers to fight when needed. Nearly 20 state units existed in the Mayan government structure. These states featured similar layouts with defined urban centers and outer rural areas. Civilian..

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How long did the Gulf War last?

The Gulf War, also known as Operation Desert Storm, pitted the combined forces of the United States and other members of the United Nations against the Iraqi Army. Although the U.N. gave its member countries the authorization to use military force against Iraq in 1990, it wasn't until Congress granted President George H. W. Bush an authorization to go to war on January 12, 1991, that the military campaign began.

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Why did the United States Senate reject the Treaty of Versailles?

Another source of opposition to the Treaty of Versailles came from those senators whose constituencies contained significant numbers of German-Americans. The punitive actions against Germany set forth in the treaty were viewed as harsh and unrealistic by many in both the political and the private realm. Others felt that the treaty favored the British Empire and sought to strengthen and expand its various colonial holdings. Complicating the issue was the position of U.S. President Woodrow Wilson, one of the treaty's advocates and staunchest supporters of the creation of the League of Natio..

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Where do you find information on the 1956 census?

A statistical abstract of the United States for 1956 was produced by the Census Bureau, according to directory site The E EBook. This publication is based on data from the 1950 census and other records.The decennial censuses for 1950 and 1960 can be found on the Census Bureau website. Census records can also be found on The Census, a website for finding family data and other records from the census.

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Where was the Titanic's destination?

The sinking of the Titanic occurred on her maiden voyage. The ship was launched on April 10, 1912, and was in service a mere five days before striking an iceberg late on April 14. The ship managed to stay afloat for about two and a half hours after the incident, enough for some of the passengers to escape in lifeboats, but the lack of adequate lifeboats doomed more than 1,500 of the people aboard.

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Why was the Roman army so successful?

The fighting technique of the Roman army was developed through a specialized training regime. New soldiers were trained harshly and placed at the front of a battle charge. Experienced legionnaires were placed behind new recruits, serving a dual function of protecting experienced soldiers and limiting desertion.\nA Roman army unit is referred to as a legion and is commanded by a legatus. A full legion unit consisted of approximately 5000 to 600 soldiers. The unit is then further divided into cohorts and centuries. A cohort is typically made up of 500 to 600 legionnaires while a century numbered..

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What is a list of presidents in chronological order?

Following President Monroe, John Adams son, John Quincy Adams became president. Following Adams were Andrew Jackson, Martin Van Buren and William Henry Harrison. Next were John Tyler, James K. Polk, Zachary Taylor and Millard Fillmore. Franklin Pierce and James Buchanan came next as the country was on the verge of Civil War. Abraham Lincoln was elected president just before the South officially seceded from the union. After Lincoln's assassination in 1865, Andrew Johnson, Ulysses S. Grant, Rutherford B. Hayes and James Garfield were presidents. The final four presidents of the United Stat..

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What was the Chinese communist revolution?

The Communist and Nationalist forces had been in conflict for decades, but the two sides entered into a truce in order to concentrate their efforts against Japan before and during World War II. After the surrender of Japan, the United States attempted to broker a coalition government, but the effort soon collapsed and the civil war began.\nThe civil war in China was one of the first proxy conflicts of the Cold War. The Soviet Union did not trust Mao Zedong and his party apparatus fully, but they supported the Chinese Communists in their revolution. The United States supported the Nationalist s..

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How did Mulan die?

"The Ballad of Mulan" begins with Mulan learning that the Emperor is recruiting for a war against nomadic tribes and Mongols. Each family is required to produce a male to join the Emperor's troops. Mulan's father is to old to go to war and survive it, and there are no other males in her family, so Mulan poses as his son and takes his place. She fights for 12 years, during which time she received many promotions due to her skill and bravery during battles. At the end of the ballad, the troops return home where many, including Mulan, are offered permanent posts in the military. Hua Mul..

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