The failure of the mercantilism policy and the tax policy during the Great Depression proves that economic policies are meaningless and they do more harm than good.

Mercantilism Policy

It's an economic theory and practice where government regulation of a nation's economy is used to augment state power at the expense of rival national powers, emphasizing exports and discouraging imports.

Tax Policy

The approach taken by a government in setting the level of taxation and determining what types of taxes to collect.

Great Depression

A severe global economic downturn that took place during the 1930s, leading to widespread unemployment, poverty, and deflation.