April 9, 1841
May 1841 battle during the First Opium War
Attack by the U.S. navy of Upolu
March 1841 fought in the First Opium War
1841 "Caída da Praia" earthquake
International treaty 1841
Cincinnati riots of 1841
1841 battle between China and Britain
Battle in the 1842 Bolivian–Peruvian War