Germany had developed self-sufficiency before the end of the war, and was manufacturing their own oil, produced 'butter' from coal, invented powdered milk, developed freeze drying, learned to store flour indefinitely, were growing their food in greenhouses on chemical 'soil,' etc. The counterfeiting of British and American money was under Operation Bernhard. The fake British notes have been often discussed in books and articles about Bernhard, but the fake American currency is not as well known. Recently the U.S. announced that it was issuing new money to counteract the counterfeit, which was said to be coming from Saddam Hussein and Lebanon. It would be more correct to say it is coming from South America, but that money is supposed to all be drug money.
Life gets complicated.
In that series, it revealed that the Russians, working with Rockefeller forces, defeated the British Bolshevik forces on South Georgia Island. If you have not read that series, this information may not make sense to you. It is important to know that information, if you intend to try to understand what is happening. NAZI forces were involved in the Falkland Islands War, on the side of the Russians. They invaded Russia, killed the Tzar and many Nationalists and took over the government.