Because the south in large part were built on slaves. They didn't have factories or anything like the north did. They had cotton and assorted vegetables. In large part many will say that is also what lost them the war.
Because they could be turned into slave states, giving more power to the slaveowners in the south. Also, expansion policy and the dram of Manifest Destiny played a part in desiring that land.
A. Alternate interior angles?
They crossed the Atlantic Ocean.
McCulloch v. Maryland (1819) is one of the first and most important Supreme Court cases on federal power. In this case, the Supreme Court held that Congress has implied powers derived from those listed in Article I, Section 8. The “Necessary and Proper” Clause gave Congress the power to establish a national bank.