The construction of the Eiffel Tower took two years and two months. 850 people have worked in its construction. This tower is made of 18 thousand 38 pieces and 2.5 million bolts and rivets were used to connect them. The height of the tower is 330 meters, which was the tallest tower in the world at the time
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Wright Brothers (Wright brothersOrville (born on August 19 1871 - died on January 30, 1948) and Wilbur Wright (born on April 16, 1867 - died on May 30, 1912) were two American brothers from Ohio who are known for inventing the first controllable motorized airplane and Heavier than air became famous on December 17, 1903
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