Also
@Ahmed858, just to add on your question, you really need to be more specific as to why you're interested in W&C's 'competitive advantage in being able to provide services in Africa' ( I am sure this was a generalised point you were just stating) but a good starting point could be looking into how W&C differentiates themselves from their competitors, for example, the first international law firm to open an office in South Africa, what impact this has been for their clients and the firm, any type of work they were involved in that interested you and why was this interesting?
Another point you could mention is when partner Joshua Siaw supported UK Prime Minister Theresa May on her trade mission to Africa - the only lawyer to be invited as a delegate on the trip (article below)
https://www.whitecase.com/news/pres...-joins-uk-prime-minister-trade-mission-africa
Ofcouse this is just a starting point but points like above could be used to illustrate why your interest in Africa's development has motivated you to apply to W&C.