Irredentism
"Irredentism is any political or popular movement that seeks to claim/reclaim and occupy a land that the movement's members consider to be a "lost" territory from their nation's past. Wikipedia"
True.
With the defeat of the white russian parties, the Communist Red Party officially signed a peace treaty with Germany, which allowed Russia to leave the war, ending the two front war that Germany and her allies faced throughout the war.
~
Answer:
The U.S. Congress claims implied powers, which are powers that best completes its enumerated powers, but are not directly stated in the Constitution.
Explanation:
The Implied Powers theory was first expressed by Alexander Hamilton on February 23, 1791; it is applied to the case law of the United States Supreme Court, in particular to extend the jurisdiction of this court to the courts of individual federal states where they are not constitutionally provided for. The extension in particular concerns powers not foreseen by the Constitution but necessary to be able to experience those expressed in the Constitution of the United States, and it is applicable both for the Congress and the Supreme Court.