5 Smallest Countries In the World That Matter the Most

4. Republic of Poland

Latest GDP Estimate: $748 billion

The Republic of Poland is a Central European country. It sits at the higher end of our list in terms of area, since it covers close to 313 thousand square kilometers. Poland also has the second highest population on our list, at 37 million people. The country has a $748 billion economy, which is one of the largest in the European Union. Poland has a strong history of contributions to science and technology and is a transportation hub in Europe due to its location.