This video is awesome. Details how the British ruined everything.
But let's see:
1. Churchill was pals with Hitler. Um? The truth, of course, is that Britain and the Empire stood alone against the Germans/Italians while the US sat on the side for 3 years. Twice.
2. Queen Elizabeth invested in the slave trade. No. Unless I'm really clueless, the slave trade wasn't all that large in the late 16th century. (Of course, they don't mention that it's Elizabeth I, to confuse people.) And: Britain banned slavery--and actively suppressed it--decades before the United States did. And did so without a civil war. And didn't have segregation into the 1960s.
3. Britain worships kings while the US is a democracy. Quite apart from having a President installed by a Court, that ignore the fact that the monarchy is symbolic and Britain has a far more vibrant democracy than the US (i.e. hated prime ministers don't stick around long.)
I could go on. But better to let you pick the holes in it yourself, fair reader.
Hat tip to Red Tory.