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 Nations
Due to their shared constitutional histories, several countries in the Commonwealth have similar legal and political systems. The Commonwealth requires its members to be functioning democracies that respect human rights and the rule of law. Most Commonwealth countries have the bicameral Westminster system of parliamentary democracy. The Commonwealth Parliamentary Association facilitates co-operation between legislatures across the Commonwealth, and the Commonwealth Local Government Forum promotes good governance amongst local government officials. Most Commonwealth members use common law, modelled on English law. The Judicial Committee of the Privy Council is the supreme court of 14 Commonwealth members.