A Hypothetical

Here's one for all you history buffs:

In the 1630's Oliver Cromwell mulled over joining one of the colonies in North America. As it turned out, Cromwell led the Round Heads over Charles I and became Lord Protector of England.

What would the world be like if Cromwell had've pissed off for the States? Considering what an insufferable prick Charles I was (until he became ten inches shorter - see Monty Python), would it have made any difference at all?

These are the kind of things that keep me awake at night. I need better drugs.