I am pretty sure its oil
Petroleum.
The chief export of a country is the most important product or resource that a country trades on the international market.
cchads opolareoixnas
Iraq's major export is oil
The main export of Mauritius is Sugarcane. It takes up 90% of cultivated land and accounts for 25% of Mauritius's export earnings
Copper is the chief export of Zambia.
Iraq exports oil
Michigan is a leading producer and exporter of a variety of local fruit such as cherries and blueberries. However, some economists also claim automotive-related products to be Michigan's chief export.
At this time, oil is Oman's chief export.
Crude oil.
China
Iraq's economy is based on The export and sale of petroleum products.