The control unit for an artificial heart was invented by Otis Frank Boykin.
Potelmy’s map was based on information by merchants and soldiers who travelled through the Roman Empire. The Ptolemy map is known to Hellenistic society in the 2nd century. Waldseemuller map used information from explorers as well as producing the first map with the label “America”. It was the primary guide, printed or original copy, to delineate clearly a separate Western Hemisphere, with the Pacific as a separate ocean.
<span>The terrible meltdown at Chernobyl, in "Russia", spread radiation across Europe, since this was one of the worst nuclear disasters in world history, along with those in the United States and Japan. </span>
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The first battles of the revolution
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Julius Caesar conquered Gaul in 58 B.C.E. Gaul covered parts of modern-day France, Switzerland, Belgium, Luxembourg, Germany, and northern Italy.
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