Final answer:
Political factors play a significant role in causing economic crises, as observed by President Abraham Lincoln.
Step-by-step explanation:
The subject of this question falls under Social Studies since it discusses the relationship between politics and the economy.
According to the provided information, the observation that the root cause of nearly every economic crisis is political, not economic, was made by President Abraham Lincoln. This quote indicates that political factors play a significant role in causing economic crises.
An example of this can be seen in the influence of political institutions on the allocation of society's scarce resources. Democratic governments, which are guided by the preferences of voters rather than economic analyses, may enact economic policies that are not always sensible.
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