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Harriet Tubman is responsible for the Underground Railroad. She was the main conductor so to speak.
Answer:
Explanation: The main developments in nautical science and technology from the 1450s to 1550s, will be considered just in the so-called era of discoveries, where most European explorers colonized and conquered many settlements around the world. Creating this situation the need to innovate in the field of science and nautical technology, with the creation of inventions as important in the maritime and cartographic environment as were the compass and astrolabe, as well as innovation in problems of transport and manufacture of vessels such as the ships with a variety of masts, which were widely used by the conquerors at that time.
The scientific, technological, social and economic results were important and with a deep Roman and Byzantine seal, giving medieval Europe a political, social, military and technological power, which meant to countries such as Portugal, Spain, England and France the faculty of spreading throughout the world territorially speaking.
