The writings of Ayuba Suleiman Diallo are an important source of information on the slave trade because they are a first hand account of the slave trade by a slave.
The sinking of the Lusitania in 1915 had a very negative effect on the American public opinion of Germany, since it was the Germans who sank the American ship for seemingly no reason.
From what I gathered from your question I think you are talking about the president of Nigeria and his name is Muhammadu Buhari.
They were expressions of religious beliefs
