What are the names of all the oil refinery plants in the Saudi Arabia?
Saudi Nationality is provided to a very limited number. due to social structure it's not easy for non-Saudi to fit in. Many families as the Saudi Arabia was Created got the Saudi nationality due to the fact they were here in Saudi. you can notice that from Family names, some can give a hint of their origin. These days you can see some would get it but it's very very limited.