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).
Head of the Commonwealth
The Head of the Commonwealth, currently Queen Elizabeth II, is recognised by the members of the Commonwealth of Nations as the "symbol of their free association" and serves as a leader, alongside the Commonwealth Secretary-General and Commonwealth Chair-in-Office. The Head of the Commonwealth does not, though, have any role in the governance of any Commonwealth state; Elizabeth's positions as monarch of each of the 16 Commonwealth realms are separate from that of Head of the Commonwealth.