Modern economies alt=Cairo-Nile-2020(1)|thumb|Cairo, the capital of Egypt As of 2006, the Arab world accounts for two-fifths of the gross domestic product and three-fifths of the trade of the wider Muslim world.
Modern economies alt=Cairo-Nile-2020(1)|thumb|Cairo the capital of Egypt As of 2006 the Arab world accounts for two-fifths of the gross domestic product and three-fifths of the trade of the wider Muslim world