<prompt> Pedzisa mutsara unotevera: Matthew Derbyshire Mann July 12, 1845 March 2, 1921 aiva chiremba wechirwere chevakadzi wokuAmerica uye mumwe wevanovhiya vakavhiya Mutungamiri William McKinley pashure pokunge  <response>: akapfurwa panhandare yePan American Exposition pana September 6, 1901, muBuffalo, New York, nomusori wehurumende Leon F. Czolgosz. 