Answer:
The power to coin money, to regulate commerce, to declare war, to raise and maintain armed forces, and to establish a Post Office.
One country that currently is dealing with a language based independence movement is Canada (French speaking Quebec vs English speaking rest). Some past similar conflict was Pakistan: it ended up in a split into Pakistan and Bangladesh.
Answer
Congress can't make any laws prohibiting freedom of speech, freedom of press, and the right to peacefully assemble or petition the government for a redress of grievances, as well as no laws on religious establishments
