वह अर्थव्यवस्था जो अन्य देशों के साथ व्यापारिक और वित्तीय संबंध रखती है, उसे क्या कहा जाता है?

The Single Market of the European Union is built upon the 'Four Freedoms'. Which of the following is NOT one of these official freedoms?

In the theory of reciprocal demand, the actual terms of trade between two countries are determined by which of the following?