Answer:
Antarctica and Australia
Explanation:
Antarctica and Australia were the only continents left unexplored by the European explorers. They lived in Europe, Asia had already been explored, they took people from Africa to be slaves in the Americas, and North and South America were visited and colonized by the Europeans.
Joseph Stalin. Hitlers biggest rival and leader of the soviet union.
The trade route to Byzantium is what led to all the others.
Hope this helps :)
~Davinia.