Why were more americans able to buy luxury items such as cars during the 1920s?

a) families were pooling their money together to buy high-priced items.

b) mass production techniques reduced manufacturing costs and therefore reduced the prices for consumers.

c) jobs were paying higher wages due to the large number of labor strikes following the war.

d) the government was assisting families of low-income status in order to buy necessities.

@lex_volleyball