General Agreement on Tariffs and Trade

The General Agreement on Tariffs and Trade (GATT) is like a rule book for how countries trade with each other. It is like a club for countries - when you join, you agree to follow the rules. The rules say that if you want to buy something from another country, you have to pay the same amount of money for it as it would cost in the other country. This means that countries can't put high taxes on things coming from other countries, which makes it cheaper for everyone to buy things from other countries.