Dee ihe na-aga n'ihu maka paragraf a - Matthew Derbyshire Mann (July 12, 1845 <unk> March 2, 1921) bụ onye dibịa na-agwọ ọrịa ụmụ nwanyị na America na otu n'ime ndị dọkịta na-awa ahụ bụ ndị wara Onye isi ala William McKinley ahụ mgbe a gbagburu ya
n'ebe a na-eme ihe ngosi Pan American Exposition na Septemba 6, 1901, na Buffalo, New York, nke onye ọchịchị aka ike Leon F. Czolgosz.