Slaves were shipped to the New World
The main reason why the United States largely shied away from imperialism prior to 1890 was because there was plenty of potential raw materials and resources located in North America, so the US had no real reason to begin searching in other places like Africa.
Two factors that helped to contribute to the scientific revolution in Europe in the mid 1500s were economic expansion and also the translation of ancient Greek texts into the vernacular. Economic development during the Renaissance period led to a new need for engineers, architects, and inventors to help to develop society which led to further development of scientific thought. Additionally with the rediscovery of Ancient Greek texts, thinkers of the time began to further develop empirical ways of thinking based in Aristotelian methods of logic and reasoning. hope it helps :)
