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What were some of the negative aspects of the Crusades?

In 1095, Pope Urban II called for a crusade to liberate Jerusalem from the Turks. He declared that the knights of France who embarked on this quest would be absolved of all sins and escape the possibility of going to hell. Over 60,000 people responded to his call. It took four years for them to assemble and reach Jerusalem, and numbers of both knights and peasantry perished along the way.\nCrusaders were motivated by the belief that the Christian God wanted them to eliminate unbelievers in order to restore prosperity to Europe. For this reason, the First Crusade is often cited as the beginning..

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What did Louis de Broglie discover?

Early in his career, he asked the question that "if photons are light particles and also move as waves like all light does, then why don't other particles, such as electrons, also follow wave patterns?" He proposed that they must also move in wave motions. His revolutionary idea fueled his desire to better understand the behavior of particles and waves. This led to his discovery of matter waves, wave-particle duality and the de Broglie wave. The scientific community celebrated his findings and awarded Louis de Broglie the 1929 Nobel Prize for physics.

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What are some facts about World War II pilots?

While the most successful American fighter pilot in World War II was Richard Ira Bong, who shot down 40 planes in the Pacific theater, the war's top pilot was Erich Hartmann of the German Luftwaffe, with 352 aerial kills. In addition to the fighter pilots from the United States Army Air Forces, a group of volunteer American pilots known as the "Flying Tigers" fought against Japan on China's behalf.

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What are some facts about mummies?

The most well-preserved mummies include the mummy of King Tutankhamen from the New Kingdom, and mummification from 1570 to 1075 B.C. was the most successful. The process used took 70 days in total and required the use of embalmers, who were special priests trained to treat and wrap the dead.During mummification, all internal parts of the body were removed with the exception of the heart. Canopic jars were used to store the vital organs near the mummy, although in later mummies, the organs were treated and then wrapped and reinserted into the body during the mummification process.The body was t..

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When was the first automobile invented?

While Benz did patent the first gasoline-driven car, he was not the first to pursue the dream of self-propelled vehicles. In the early 1500s, Leonardo da Vinci sketched a mechanized, horseless cart, and in 1769 Nicholas-Joseph Cugnot built a self-propelled vehicle with a steam engine.\nRobert Anderson invented the first electric vehicle sometime between 1832 and 1839. It featured a rechargeable battery that drove a small electric motor, but because the vehicles were costly and required frequent recharging, gasoline-powered engines won out.

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What were the positive aspects of the Mongol conquest?

For more than 100 years, the countries under Mongolian rule co-existed peacefully. Historians call this peace the "Pax Mongolica," and this led to China and Europe reopening trade routes along the Silk Road. Monks, missionaries and traders traveled along these trade routes, as did explorers such as Marco Polo, who traveled to Xanadu, China to meet with Kublai Khan. The Mongols also introduced guns and gunpowder to Europe during their invasion, which led European states to develop firearms technology and build separate armies.\nWith the tribes of Mongolia united into one nation, Genghis Khan an..

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What did the Egyptians do for fun?

Senet was a very popular board game that is an ancient version of snakes and ladder. The object of the game was to move a piece through a snake-like path and finish on a square that represented either good or bad fortune. Another board game played by the ancient Egyptians was 20 squares.Children enjoyed outdoor games like ball, tug of war, racing, shooting arrows, and piggyback. Girls danced and played with dolls and other toys.Egyptians also had fun at parties where there would be flute or harp music. Dancers used rattles called sistras while dancing.

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How many people died in the Dust Bowl?

Drought and poor land use practices contributed largely to the Dust Bowl of the 1930s. Although the Dust Bowl officially began in that decade, prolonged dry spells and the growing use of improper farming and cultivation techniques employed by farmers in the southern and Plains states during the preceding decade made conditions ripe for the Dust Bowl. In the 1920s, farmers began replacing native prairie grasses with wheat. Wheat, a staple crop, does not withstand dry weather conditions, as does prairie grass, and fails to protect land from wind erosion.While millions of Plains residents left th..

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What weapons did the Algonquin employ?

The Algonquin are a Native American tribe who lived in southern Quebec and eastern Ontario. They are a subgroup of the Algonquian peoples, a group of Native Americans who speak Algonquian languages. The Algonquin's closest allies were the Ojibway, Ottawa and Huron tribes. Although they traded furs with the Iroqoius, they were often at war with them.\nThe Algonquin often used ball-headed war clubs. These weapons were curved, asymmetrical clubs carved from one piece of wood. Knives were also a popular weapon and were mostly sharpened from stone, obsidian or flint. Like most Native American ..

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Where did the Cherokee tribe live?

The Trail of Tears marks the journey and plight of the Cherokee Nation during their relocation to Oklahoma with thousands dying along the way. Three strong communities of the Cherokee Nation exist in Oklahoma as federally recognized groups. The Cherokee are an advanced tribe with a written alphabet and language created by Sequoyah in 1821.

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