Answer:
A researcher would use the primary source of data to know exactly how the event took place. A secondary source is based on the historical event and records the historical events based on the event usage. Primary sources enable the researchers to critically analyse and study the historical event.
Explanation:
Roosevelt's Corollary was an addition to the Monroe Doctrine that declared the United States could intervene, or use military force to keep peace, in Latin American countries when necessary. Dollar Diplomacy focused on business. Taft believed the United States should invest in other countries to countries. Taft used millions of dollars to help unstable Latin America.
Supreme Court nominations
The three characteristics that historian Doris Kearns Goodwin believes were essential to the success of the 32nd President Franklin Delano Roosevelt were trust, optimism and communication.
Roosevelt exhibited these traits in that he came to power at a difficult time, when the Great Depression crippled the economy and negatively impacted citizens' hopes.
It was through his actions such as the creation of the New Deal, a project of high investment in the economic realignment of the USA, with the construction of schools, hospitals, hydroelectric plants and airports that he showed confidence and optimism in the country's future.
He also displayed communication skills by being the main spokesperson for the American people through the Atlantic Charter, which instituted a post-World War II vision, assuring values of freedom and peace.
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