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…showed last 75 words of 907 total… a military engineer, he designed fortresses. As a civil engineer he devised a system of locks for Milans canals, which affected how people lived during that time period. Leonardo was also advanced in physical science and life science. He produced designs for war machines, tanks, machine guns and movable bridges. Leonardo de Vinci greatly influenced the Renaissance in Europe and many of his important works continue to be used and enhanced throughout the world.