When Europeans started showing up in the New World, the native cultures were technologically far behind. Many still used stone tools: North American tribes used flint, while some Mesoamerican cultures ...
What are the factors that caused the new world civilizations to be less technologically advanced than the old world?
Assuming they started at the same point (maybe the split of the continents or the migration of the first "Native Americans" to the American continent), why did the Old World end up developing faster? ...