What is the population of the largest city in Iraq, who's 1956–57 Iraq FA Cup Championship was open to teams from the capital?
1956–57 Iraq FA Cup Championship The 1956–57 Iraq FA Cup Championship was the 2nd season of what is now known as the League of the Institutes (the top division of Iraqi football from 1948 to 1974), and it was the first national championship to be held since the 1948–49 season. Unlike that season, this time it was open to teams from Baghdad only.
Al-Quwa Al-Jawiya Nadi Al-Quwa Al-Jawiya Al-Riyadhi ("Air Force Athletic Club", Arabic: نادي القوة الجوية الرياضي‎ ‎ ) is an Iraqi football club based in Rusafa District, Baghdad that competes in the Iraqi Premier League, the top-flight of Iraqi football. Founded in 1931, it is the oldest existing football club in Iraq. It is also one of Iraq's most successful clubs, having won eleven league titles, the most recent being in the 2016–17 season. The club has won four Iraq FA Cups as well as a joint-record three Iraqi Elite Cups and two Iraqi Super Cups. It is also the first of only two clubs to win all four of the aforementioned trophies (League, FA Cup, Elite Cup, Super Cup) in the same season (the 1996–97 season).