How did the Black Death spread? It was spread by people along trade routes. The Black Death is another name for bubonic plague, which is caused by a bacteria called Yersinia pestis. Y. pestis generally lives in fleas that feed on rats. When the flea bites the rat, the bacteria passes into the rat’s blood. […]
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When was shampoo invented? It was invented in India in about 1500. Our hair gets dirty because we secrete an oil called sebum which protects the structure of the hair and stops it from breaking. However, this oil can build up and other things can stick in it, such as dirt. It also has an
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Why do we say boycott? The word comes from a British land agent who lived in Ireland. His name was Captain Charles Cunningham Boycott. He was born in England in 1832. He joined the army when his family paid for his commission in 1850. He was not able to join on the strength of his
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When was the Roman forum built? In the 7th century BC. The beginning of the Roman forum is difficult to get a grip on because the Romans liked to embellish the legend of the formation of Rome. The legend is that Rome was founded by the brothers Romulus and Remus in 753 BC. The brothers
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Why did the Mayan civilization collapse? Probably because of overpopulation, environmental damage, war, and extended drought. The Mayan people lived in an area that is where southeastern Mexico and northern Central America are today. People started living there in about 8000 BC. By 2000 BC the Maya were settled and farming the land. From about
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When was the penny first used? The first coin to be called a penny was in 790, but the word meant “all money” and not just one coin. There are several currencies across the world that use “penny” for their smallest coin. In the UK there is a one penny coin. In the United States
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How long has the Sahara been a desert? Possibly for 4.6 million years, but maybe as long as 7 million years., The Sahara goes through a 41,000-year cycle. The Sahara Desert is the largest hot desert on Earth. The largest deserts are actually the Antarctic and the Arctic deserts. The Sahara is 9.2 million square
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When did the Egyptian Empire start to decline? It peaked during the reigns of Ramesses II and Ramesses III from 1279 BC to 1155 BC) and then began to decline. People have been living along the Nile valley since about twelve thousand years ago. They were hunter gatherers and fishermen to start with, but they
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Where did the names of the continents come from? Generally, from Greek and Latin. There are seven continents and one continent that is almost completely underwater. In order of size, the continents are Asia, Africa, North America, South America, Antarctica, Europe, and Australia. The submerged eighth continent is Zealandia. The only part of Zealandia that
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Why were the Wright brothers able to fly in 1903? Because they employed a very methodical and scientific method and because of technological advances. On December 17th, 1903, at 10:35, Orville Wright flew the Wright Flyer for 12 seconds and covered 37 meters. It was the first ever powered flight. They flew three more times
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