Trade systems are structured methods through which goods and services are exchanged between individuals, businesses, or countries. These systems can be local, national, or international, and they often involve various forms of currency, barter, or trade agreements. The efficiency of a trade system can significantly impact economic growth and development. Different types of trade systems include free trade, where tariffs and restrictions are minimal, and protectionism, which involves government policies to protect domestic industries. Additionally, trade blocs like the European Union or NAFTA facilitate trade among member countries by reducing barriers and promoting economic cooperation.