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In the 10th century, guns were created by the Chinese, using a bamboo tube that had gunpowder in it that would fire a spear. Gunpowder was invented by the Chinese in the 9th century.

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In Strasbourg, France 1436, a man named Johannes Gutenburg made the printing press. This invention made millions of books and we still use the printing press today.

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On May 29th, 1453, a Turkish sultan named Mehmed II of the Ottoman Empire, had breached Constantinople's ancient wall using cannons and besieging the wall for 55 days.

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During the 15th century, a group of people called the Aztec's, had built a large city on an island that was previously known as Lake Texcoco in the Valley of Mexico, until it was captured by the Spanish in 1521.