The fine folks at CrashCourse have put together an awesome animated video about America's entry and contribution to World War II that clocks in at just over a dozen minutes. And as per usual, they've crammed an unbelievable amount of detail in a short amount of time.

More impressive than that is that these guys get a lot of the history right. There are definitely items worth quibbling about in the video, but that's the stuff of history, right? Like, was it truly "game over" after D-Day, or did the Soviets have things well in hand on the Eastern Front by that point? And what about the ethics of dropping the A-bomb on Japan? Was it truly a weapon of a different sort, or was it no different than the ongoing bombing campaign? Please add your thoughts to comments.

This is part one of two; we'll definitely post the second episode once it's up!