Answer:
Explanation:
During the period of the American civil war that occurred between 1861 to 1865.
The then United States President, Abraham Lincoln argued that secession and the establishment of the Confederate States of America had no legal foundation under the Constitution of the United States.
His claim was that the Constitution, which serves as the tenets and guiding principle of the Union, embodied the joint will of the people and could not be undermined or eliminated by state congresses or state houses.
