Not literally of course...that sounds silly even by alternate history standards. But one classic way of building a timeline is to 'borrow' history from another point and use it as the basis for a new timeline. To wit- Tecumseh and Ghenghis Khan. Two men who, in their own times, attempted to unite disparate factions of tribes into a single confederation with the ultimate goal of conquest. Khan succeeded, Tecumseh failed. The question is why? Based solely off the chances that the indian tribes and nations might unify (and not whether they stand any chance of success) could Tecumseh have succeeded by adopting the strategies of Ghenghis Khan?