Somewhat recently, people found traces of cocaine on Egyptian mummies. Cocaine is from South America, yet North and South America were discovered in the 1400s, or so I thought. Did Ancient Egyptians know of the Americas and if so, how did we "lose" these two continents until the 1400s?
Follow up question: I have heard similar stories of vanilla being found in tombs in Megiddo from around the bronze age. How do those similar claims compare?