You'd be like Canada, Australia, New Zealand, South Africa...

You wouldn't have been so beastly to the Native Americans. You'd've abolished slavery earlier. You could have created the sort of society that Texas might not have wanted to join!

You would have entered two world wars earlier.

Nobody on your side of the Atlantic would have been able to do a cockney accent. And they still can't (it always sounds slightly Australian).

And Jerome is a French name!