2. It is a great way to make money to replace the money that a nation has lost in a recession caused by abuses of the financial system. You just print more money.
3. Actually I don’t think they actually print currency notes amounting to the hundreds of billions of dollars or pounds to replace the money they have lost. The amount of printed currency notes would be huge and be very difficult to transport to the banks which has lost the money. There would be a stream of armoured cars from the mints to the banks.