Human nature hasn’t changed since then or long before.
But cultures have, as have social rules, and what the majority of people recognize as "common knowledge".
In the 1920s, in Germany and the neighboring nations, most gentlemen, would do the "kiss the hand" ( no, mostly by that time, the hand wasn't actually kissed ! )thing, to women they knew well. And I bet you don't know what that really represented!
That's a long gone bit, as is the tipping of a hat.
Little girls no longer curtsy to their elders and little boys no longer bow to their elders, when introduced. And yes, that was done here in America too, even in the 1940s, which was the end of all of that.