France and UK are two great nations, both members of NATO. However, althoug they are also among the powerfull UE nations, their historical relationship with their former colonies,the way, they occupied any country, which was different from each other, continue to cause too match troubles in most of independant countries, especially in african ones. the language, Security and economy are the main fields most interesting. With respect to security, we believe that the UK is helped by the USA to maintain the peace. Why, in the most french (and belgian too) former colonies there is no democracy with frequent political conflicts conducting to civilians war etc.. This book is an introduction to better examination, of these questions.