The Federal Reserve System is the central banking system of the United States. The primary motivation for creating the Federal Reserve System was to address banking panics. Other purposes are stated in the Federal Reserve Act, such as "to furnish an elastic currency, to afford means of rediscounting commercial paper, to establish a more effective supervision of banking in the United States. It is what controls the money supply in the US.
It will be the Warsaw Pact.
They are both one of the largest religions in the world. :)
Sometimes they figure out how to build better shelters or learn better farming and hunting techniques for the environment they live in