The stomach has an internal lining, or mucous membrane, called the gastric mucosa. The mucosa must create hydrochloric acid to break down food, but also protect itself from the acidic contents that it creates. This delicate balance is controlled by three different glands in the lining of the stomach.
The IMF, the SDR, and the Dollar: One Big Happy. The SDR is a fake currency issued by the International Monetary Fund. It was invented in 1969, the first year of the Nixon administration. It was a stop-gap measure to save the fixed exchange rate system of currencies, which came into existence in 1946, when the 1944 Bretton Woods system was implemented.
First pound (SDP) [edit]. The first pound to circulate in Sudan was the Egyptian pound. The late 19th century rebels Muhammad ibn Abdalla (the Mahdi) and Abdallahi ibn Muhammad (the Khalifa) both issued coins which circulated alongside the Egyptian currency.