Napoleon had been fighting this army of slaves and free people in Haiti and it depleted his forces. And after the Revolution, when the French were driven out, they stopped and sold this big chunk of North America to the Americans for very little money.
The musicals had a good, happy feeling, saying that the world is a better place. They say it's not reality, but who cares? There's too much reality these days.
In Tim's films, more than most, if you miss the tone, you don't get the film.

