the United States
I think that China is the most leading importer and exporter because it sends out a lot of products like toys. But this might not be right.
congo
Oil.
The United States is currently the world's largest phosphate exporter.
maple leaf syrup
new zealand
Australia is the leading exporter of lamb and mutton.
India
Congo
Saudi Arabia
Ecuador is the leading exporter of crude oil in South America.
Europe trust me I have already researched this in the past.Europe is not a country.