NOV 18: Foreign Exchange Markets: A General Overview and Structure of the Forex Market
In the beginning countries would trade with each other using the barter system. If one nation needed lumber but had cattle, they would trade one product for another. This was pure trading.

The FX market or the foreign exchange market, is largest and oldest financial market in the world. It is also the biggest and most liquid market in the world, a market that runs 24 hours a day, five days a week, circling the globe with financial transactions.