Answer:
They could have decreased protectionism. Protectionism means that they limited free trade between nations and restricted trade of foreign goods. Protectionism is widely accepted as maybe the biggest reason for the development of the Great Depression and thus if the US had decreased it, it most likely would not have happened at all.
Hey, I did a project on Rome and from what I have researched was by two brothers. So it would be A!
In 1939 Japan had control over Korea, Taiwan and Manchuria (Northern China). They had declared war on mainland China to gain more territory and resources.
