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? ...
When in history do we first have record of steel being used as a material? I am also interested in both its initial purpose and when it was first used in weapon making.