impact of FDI on Nigerian economic growth?

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research questions :
1. To what extent has foreign direct investment impacted on the economic growth of Nigeria?
2. What is the causal relationship that exists between foreign direct investment and Nigeria economic growth?
3. Is there any observed long run relationship between economic growth and foreign direct investment in Nigeria?

the structure of the paper should be as follows
?Introduction( should include what the problem is , why is it important and also the solution)
literature review
theoretical frame work( so what pattern of trade does this follow specific factor model , HO model , richardian model )
Analysis
paper should be 2500 words and the refrence should be in the 9th page