In China, Laurence notices many of the women walk with a "queer, mincing gait". He wouldn't know about foot binding, of course.
In Throne of Jade, there's an amusing little subplot where Laurence hears about a nasty cold going around the English dragons, and many jokes are made about how dragons are such big babies when they're sick. Temeraire comes down with the cold, and it's played largely for laughs. In Empire of Ivory, it turns out that the "cold" is actually a form of dragon tuberculosis that's slowly and painfully killing every dragon in England, and if they hadn't stopped at exactly the right port in Africa and prepared exactly the right mushroom for Temeraire on a whim, he and every other English dragon would have died. And for that matter, since Temeraire was on his way to China, all of the Chinese dragons would probably have died, too.
The period after Napoleon's fall in real life resulted in a massive conservative backlash that led to two World Wars and colonial empire's continued survival for over 150 years.
There's a good reason why it makes sense that Napoleonic France would be in a position to extend equal rights to dragons, and it's not simply getting an advantage over England. One of the founding tenets of the Republic (and legacies of the French Revolution) is the motto "Liberty, Equality, Fraternity." What Napoleon did was in effect extend the same rights enshrined in that ideal to dragons, effectively making them just like any other citizen of France. Also, since dragons were considered demonic in at least some traditionalist lore, their vindicated place can be considered an ideological and systemic Take That against the old order.