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Complete overview. From 1909 to 1913, President William Howard Taft and Secretary of State Philander C. Knox followed a foreign policy characterized as "dollar diplomacy".
The US dollar diplomacy is famous by President William Howard Taft. Thus, option A is correct.
Dollar diplomacy is the part of US foreign policy. The policy is based in the use of economic power instead of threat or military between countries.
US Dollar Diplomacy
The US dollar diplomacy is signed in 1913. The goal of the policy is to create stability among the foreign countries, along with promoting the commercial interests of US.
The policy was used under the leadership of President William Howard Taft. Thus, option A is correct.
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