American film historians recently came across a fascinating discovery when they found the Czech National Film Archive has the only surviving print of the 1929 US movie, the Mysterious Island. The archive in Prague stores around 500 films from Hollywood’s early days, proof that the global dominance of American cinema goes all the way back to the birth of the film industry.The epic American movie The Mysterious Island, loosely based on the French writer Jules Verne’s adventurous novel, was released in 1929. The Technicolor film starred, among others, the Oscar-winning actor Lionel Barrymore. But it became a financial and critical...