What is rubber? History of rubber
A big rubber tree in Mexico Olmec people, living in southern Mexico, invented rubber about 1600 BC. It was just as they were beginning to build their empire. Rubber starts out as [...]
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Who was Charlemagne? Early Middle Ages
Who was Charlemagne? This is Charlemagne, or possibly his grandson (now in the Louvre Museum) What's Charlemagne's real name? Charlemagne's name is really Charles le Magne, or Charles the Great. [...]
