This is a random map I made one day, and I decided to add a little back story to it.
Among other differences from our world:
The Byzantine Empire never fell
The Ottoman Empire never formed, but some sort of Islamic Empire rose to take its place
The Reconquista failed, and the Iberian Peninsula became part of the Islamic Empire
The South remained loyal to the British during the American Revolution, and eventually gained dominion status
However, the United States still gain independence and eventually bought Louisiana from the French.
But Mexico, or something like it, is more powerful and was able to keep both America and the British Southern Dominion from invading it
Russia and France were a bit more successful with colonizing the New World
The British colonized and/or conquered Argentina and Uruguay (both eventually gaining dominion status)
New England (plus New York and New Jersey) eventually broke off from the USA
Sweden won the Great Northern War, and was more successful in terms of colonies
The Meiji Restoration fell apart, the Shogunate never ended, and eventually Japan and Korea became British colonies
The Dutch kept Australia, New Zealand, and South Africa
Pan-Germanism was more successful, leading to a union of the German and Austro-Hungarian (who somehow own Venezuela)