Sources are used in a paper to show what ideas inspired you and whose theories you would be using and you cite the sources in order to avoid plagiarism. If you don't have sources, your paper will not be valid and you could get accused of plagiarism. The more sources you use the better but you should keep in mind that they need to be important for the paper and used with a purpose and not just to increase the number of sources.
Answer: True
Explanation:
Dollar diplomacy was a form of US foreign policy developed by President William Howard Taft, which consisted of using the economic power of the United States over Latin America and East Asia (with loans), rather than using military force.
It should be noted that it was President Roosevelt (Taft's predecessor) who laid the foundation for this policy. All this in order to protect the interests of the United States in Latin America, by encouraging stability in those countries and expanding US commercial interests in those nations.