Watch the full series on YouTube.

While today the U.S. is in a trade war with China, the foundations of international trade were laid to avoid war altogether. In this video, Trade Guy Bill Reinsch gives a quick rundown of the Bretton Woods System, the system of global trade that emerged at the end of WWII. Why do we trade with other countries? Watch this video.

164 countries are members of the World Trade Organization, the only global international organization dealing with the rules of trade between nations.