Final answer:
President Franklin D. Roosevelt's policies on industry led to increased government intervention and the implementation of public works projects for employment.
Step-by-step explanation:
One effect of President Franklin D. Roosevelt's policies on industry was an increase in government intervention to revive industries experiencing declining prices. Roosevelt believed that government planning could help stimulate production and increase prosperity, similar to the success of government intervention during World War I. Public works projects were also implemented to provide immediate employment during the economic downturn.