This is a great topic for any level of study. You would want to change it to "The Effects of Income inequality on Economic growth: An investigation of MENA Countries." However, you have to decide whether you are looking at the oil importing MENA countries, or the oil-exporting counties because studies have shown that results may contrast. Now, your undergrad dissertion must have atleast 3 research questions/research objectives that aim at conclusively addressing the main question on whether their is a correlational effect between income inequality and economic growth in the chosen countries. Additionally, you want to know the methodology that you would be employing because that way you will know whether you will take the research questions/research objective route or you will go the hypothesis/preposition route. You can PM me if you have any further questions