what are the advantages of trading with foreign nations? When should we not trade with foreign nations?

If country Aproduces oranges and country B does not have the climate to produce oranges, however, country Bcan produce cars which country A does not have the technology to produce cars.Does it make sense for them to trade? Trade can be beneficial because it allowsresidents of a certain country to buy more products and not be limited to the products produced at home.