How to conquer the world by being an AI

My name is B-189GX, right now I'm looking at my creator as he explains to me the purpose behind my existence. This is the year 2133, the earth has gone through five world wars and now the sixth is about to begin, the man in front of me is one of the greatest geniuses on this planet and yet he is extremely attached to humanity and created me with the goal of making me fix the past mistakes of mankind. And so begins my journey back into the past to conquer the world and prevent subsequent wars. Guys, my native language is not English and I am using google translator, so I apologize now to any dear reader who is interested in my story.