Do you usually have a lot of chores to do at home when you return from school? Do you have to help cook supper, walk the dog, mow the lawn, […]
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The helicopter was invented by the Chinese in the 4th century, more than a 1,000 years before Leonardo da Vinci. It was called the Bamboo Dragonfly and could fly 25 feet (7.6 m) up and down. The first modern helicopter was invented by the French.