I know the answer but I forgot
The basic constitutional issue resolved by the Civil War was the
supremacy of Federal authority over the states. The correct option among
all the options given in the question is option "3".
The American Civil War that is commonly known as Civil War
in America was fought between the years 1861 to 1865. It was the war of Independence
that the people of America fought against the oppressive British rule. This
long fought war was mainly responsible for creating the great country of
America.
