Answer:
Necessary and Proper Clause
Explanation:
The Necessary and Proper Clause allows the Federal Government to make laws that are necessary for the exercise of other powers established by the Constitution.
"[The Congress shall have Power . . .] To make all Laws which shall be necessary and proper for carrying into Execution the foregoing Powers, and all other Powers vested by this Constitution in the Government of the United States, or in any Department or Officer thereof."
Stocks directly affected only 4 million out of 120 million people. Indirectly:
-Risky loans hurt banks
-Consumer borrowing
-Bank runs
-Bank failures
-Savings wiped out (Banks failures wiped out peoples saving)
-Cuts in production
-Rise in unemployment
-Further cuts in production
Belief, relief , assurance