Unless you changed every history book and the minds of every person... nah.
I mean technically if you want to change the past all you need to do is believe differently than everyone else... then its a different past for you.
We dont know that the past is really what it is anyway, all we go by are things written in those times, things we find... For all we know those things that we find that look official could be written by some 12 year old... lol...
This is why I like science.. not history. lol

__________________