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
Copper is the chief export of Zambia.
The main export of Mauritius is Sugarcane. It takes up 90% of cultivated land and accounts for 25% of Mauritius's export earnings
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.