Old World is a term about the world before Christopher Columbus.
About 1492-1506[change | change source]
They had foods and animals Native Americans had not seen before, like sugarcane, pigs, horses, and more. But, they did not know that they were also giving sickness. They accidentally killed many Native Americans. But, they did also kill many of them on purpose, so that it would be easier to build their new cities.[source?]