Answer:
Hello,
It was the Franklin Roosevelt's "Good Neighbor Policy'
Explanation:
The Good Neighbor Policy was a foreign policy implemented in the United States by President Franklin Roosevelt with the aim of showing that the U.S were good neighbors with Latin American Countries. The doctrine was signed to improve relationship of the U.S with its neighboring Latin American countries. During the world war II most Latin American countries were on the side of the Allies as an influence of the policy.
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It's b, because a mixed economy refers to socialism, where they have some control over economic decisions, but not all.
I believe the answer is: increased government regulation of big businesses.
The government regulation that advocated by Washington Gladden was proposed to improve consumer safety. Some examples of the regulation of businesses that He advocated are : Daily inspections for big businesses for product safety, Restrictions on monopoly, and inheritance taxation.