During the worldwide economic depression of the 1930s, industrial output, farm production, and employment fell dramatically. true or false

Eat Depression, worldwide economic downturn that began in 1929 and lasted until about 1939. It was the longest and most severe depression ever experienced by the industrialized Western world, sparking fundamental changes in economic institutions, macroeconomic policy, and economic theory. Although it originated in the United States, the Great Depression caused drastic declines in output, severe unemployment, and acute deflation in almost every country of the world. so it is true

Answer is mass marketing.

The inuted states of america