Morning,
Here you are the glossary: Please, don´t translate TRADE PATTERNS
I recommend you watching the video to understand the trade in the European Union and what is a custom union.
Regards!
GLOSSARY:
World Trade: comercio mundial
agreements: acuerdos, tratados
World Trade Organisation: Organización mundial del comercio.
Form: forman
Blocs: bloques
Free trade areas: zonas de libre comercio
North american Free Trade agreement: Tratado de libre comercio de américa del Norte
Custom union: unión aduanera
Switzerland: Suiza.