Peter The Great (Peter I of Russia) ruled from 1672 until his death in 1725. During his reign he modernized Russia and transformed what was nothing more than a small Tsardom into a 3 billion acre...
In the grand scheme of history, he definitely was great. He single-handedly took Russia from being a backward virtually irrelevant country to being a power among other European countries.
He had Western Modernized entire Russia, increased trade, and even established a city in the middle of a swamp known as St.Petersburg. Hope this helps. P.S I didn't name EVERY THING... he did a lot...