1) Russian invention 
Licorne (Единорог, Yedinorog, `unicorn`) is the French name of an 18th- and 19th-century Russian cannon, a type of muzzle-loading howitzer, devised in 1757 by M.W. Danilov and S.A. Martynov and accepted by artillery commander, general Peter Ivanovich Shuvalov. The licorne was a hybrid between the howitzers and guns of the era (a gun-howi.....