Were London a city-state, it would have the 20th-largest national economy in the world – larger than the national economies of Saudi Arabia, Argentina and South Africa. Were London a city-state, its national per capita gross domestic product would be greater than that of the United States. Were London a city-state, it would be the 15th most populous country in Europe, with an overall population bigger than that of Austria or Denmark and bigger than the combined populations of Scotland and Northern Ireland.
looking beyond borders 