The United States is an example of what type of union?

Question $10$ options:

A$)$

Customs union

B$)$

Political union

C$)$

Free trade union

D$)$

Economic unionThe United States is an example of what type of union?

Question $10$ options:

A$)$

Customs union

B$)$

Political union

C$)$

Free trade union

D$)$

Economic union