Final answer:
The membership of the WTO includes about 164 nations. The WTO ensures nondiscriminatory trade between member countries and promotes global free trade.
Step-by-step explanation:
The membership of the WTO includes about 164 nations. The WTO is an organization that ensures nondiscriminatory trade between member countries, reducing trade barriers and resolving trade disputes. It has a smaller staff and budget compared to many large universities, but it plays a crucial role in promoting global free trade.