which of the following factor into making the great depression, a worldwide crisis

American protectionism

A post World War I economic boom

Lowered tariffs

an increase in agricultural prices

American protectionism and lowered tariffs were factors that contributed to the worldwide crisis of the Great Depression. These policies restricted international trade and contributed to a decrease in global economic activity and growth. The post-World War I economic boom and an increase in agricultural prices also played a role in the buildup to the Great Depression, but they were not as direct factors in its worldwide impact.