 Complete the following phrase:  During the 1970s, Baghdad experienced a period of prosperity and growth because of a sharp increase in the price of petroleum, Iraqs main export. New infrastructure including modern sewerage, water, and highway facilities were built during this period. The masterplans of the city 1967, 1973 were delivered by the Polish planning office Miastoprojekt-Kraków, mediated by Polservice. However, the IranIraq War of the 1980s was a difficult time for the city, as money was diverted by Saddam Hussein to the army and thousands of residents were killed. Iran launched a number of missile attacks against Baghdad in retaliation for Saddam Husseins continuous bombardments of Tehrans residential districts. In 1991 and 2003, the Gulf War and the 2003 invasion of Iraq caused significant damage to Baghdads transportation, power, and sanitary infrastructure as the US-led coalition forces launched massive aerial assaults in the city in the two wars. Also in 2003, a minor riot in the city which took place on 21 July caused some disturbance in the population. The historic Assyrian Quarter of the city, Dora, which boasted a population of 150,000 Assyrians in 2003, made up over 3 of the capitals Assyrian population then. The community has been subject to kidnappings, death threats, vandalism, and house burnings by al-Qaeda and other insurgent groups. As of the end of 2014, only 1,500 Assyrians remained in Dora. The Iraq War took place from 2003 to 2011, but an Islamist insurgency lasted until 2013. It was followed by 