T he western-produced Greco-Judeo-Roman epic has been with us since early cinema, while the Chinese film industry kept the eastern end up with a string of recent historical pictures. But what about the lands in between? Apart from a smattering of pictures about Genghis Khan, including John Wayne’s regrettable appearance in 1956’s The Conqueror , the Mongol hordes have not exactly ravaged the box office. So it’s refreshing to see Rise of the Conqueror sally forth, with Christian Mortensen in the saddle as the 14th-century Turkic-Mongol chieftain Timur . This is basically Gladiator with added throat-singing. Man-at-arms Timur is a kingmaker caught between his native Barlas tribe, which includes his testy brother-in-law Hussayn (Mahesh Jadu) who’s eager to reclaim his family’s rule in Samarkand; on the other side is occupying Mongol warmonger Tugluk (Maruf Otajonov), who appreciates him for his khan-do attitude. Tugluk pegs Timur to advise his son, Ilias (Joshua Jo), to whom he has entrusted the city.…