Commonwealth of Nations
The land area of the Commonwealth nations is about , or about 21% of the total world land area. The three largest Commonwealth nations by area are Canada at , Australia at , and India at . In 2016, the Commonwealth members had a combined gross domestic product of over $9 trillion, 78% of which is accounted for by the four largest economies: United Kingdom ($2.629 trillion), India ($2.256 trillion), Canada ($1.529 trillion), and Australia ($1.258 trillion).
Commonwealth of Independent States
Eight of the nine CIS member states participate in the CIS Free Trade Area. Three organizations are under the overview of the CIS, namely the Collective Security Treaty Organization, the Eurasian Economic Union (alongside subdivisions, the Eurasian Customs Union and the Eurasian Economic Space, which comprises territory inhabited by over 180 million people); and the Union State. While the first and the second are military and economic alliances, the third aims to reach a supranational union of Russia and Belarus with a common government, flag, currency and so on.