The top currency used globally for trade is the United States dollar (USD). It functions as the predominant reserve currency, meaning that many countries hold USD in substantial quantities within their foreign exchange reserves. The dollar is widely accepted in international transactions and is favored for its stability and liquidity, making it a safe choice amidst fluctuating global markets. It serves as the standard currency for commodities like oil, gold, and natural gas, influencing international trade dynamics. The strength of the USD reflects the economic power of the United States and has significant implications for global finance.