Definition: This is an action or thing that citizen is required to do by law.
Example: Examples include obeying laws and paying taxes
Term:

Mandatory Duties of U.S. ... U.S. citizens must comply with certain mandatory obligations, including: Obeying the law. Every U.S. citizen must obey federal, state and local laws, and pay the penalties that can be incurred when a law is broken. Paying taxes.

Explanation:

answer --

  the answer is you barrow money to buy stock

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abraham lincoln  (february 12, 1809  – april 15, 1865) was an american statesman, politician, and lawyer who served as the 16th  president of the united states  from 1861 until  his assassination  in april 1865. lincoln led the nation through the  american civil war, its bloodiest war and its greatest moral, constitutional, and political crisis.[2][3]  he preserved the  union,  abolished slavery, strengthened the  federal government, and modernized  the u.s. economy.