Supply and demand are fundamental concepts in market economics that dictate prices based on the availability of goods and the willingness of consumers to purchase them. In trading, particularly in financial markets like forex, it involves recognizing historical supply and demand zones derived from past price actions, as current order flows are often inaccessible to retail traders. Understanding the dynamics of supply and demand, including how to identify and utilize supply and demand zones in trading, can help traders make informed decisions and align with market movements.