Answer: It's just a tradition
Explanation: This is just a tradition that President Roosevelt started there really isn't much to it besides it is a tradition. Even Donald Trump nowadays does it and keeps the tradition going. Hope this helps. ;)
Explanation:
Monarchies are ruling organizations in which one person has supreme control over the people and government of their nation.
Oligarchies are ruling organizations in which there are a select few people in power and they mostly have control over the people and government, but it is more streamlined.
Democracies are ruling organizations in which the central government has more power than the people, which make several decisions for the people of a nation.
I believe that the best answer among the choices provided by the question is the third choice , suitable climate and soil
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