How does Louisa May Alcott use dialogue rather than description to reveal aspects, or character traits, of each of the March sisters?

One example of dialogue as a tool for characterization can be found in Jo's language. She is witty, and she has a quick tongue. She also uses language that he mother doesn't deem ladylike. Thus, her language illustrates her take charge attitude, outspokeness, tomboyish ways, and self-confidence.