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An Astrolabe is an old device used to predict positions of the Sun, Moon, planets and stars. They were also used to predict the local time.
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The tower of London was the ultimate keep of the British Empire.
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Minamoto no Yoritomo was the founder and the first shogun of the Kamakura Shogunate of Japan. He ruled from 1192 until 1199
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The Mongols would conquer much of Eurasia, changing former political borders.
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His kingdom is divided among his children and grandchildren: Empire of the Great Khan, Chagatai Khanate, Mongolian Homeland, and the Blue Horde and White Horde. (Which would later become the Golden Horde.
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The first naval battle that used cannons in ships
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