Answer:
c. The Great Depression and the Smoot-Hawley Tariff led to the Generall Agreement on Tariffs and Trade. As world trade grew, a more formal organization was needed and the World Trade Organization eventually replaced GATT.
Step-by-step explanation:
It is worthy saying that the GATT remains but it has been taken over by the World Trade Organization. Tariffs like Smoot-Hawley after World War II as well as the Great Depression were major events that created the need for a General Agreement on Tariffs and Trade. It was initially signed by a few countries and it kept growing, thus the need for a more formal World Trade Organization.