List three ways things changed in America after world war 1

Which of these marketing methods henry ford sell the model t to many people who had never before owned a car? a) offering free maintenance on cars for a full year b) airing television commercials with memorable slogans c) advertising with the new communication outlets such as radio d) offering many different colors and models for buyers to choose from

List of social classes of the shang dynasty in order ?

Iam a word that means to bring to fields and crops