 
 <prompt> Wetin dey inside Charlemagne line? Based on di last question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: Napoleon III respond with power, send ship of the line Charlemagne go Black Sea. Dis action na violation of the London Straits Convention. So, France show of power dey pose real threat, and when combined with aggressive diplomacy and money, make Ottoman Sultan Abdülmecid I accept new treaty, wey confirm France and Roman Catholic Church as di supreme Christian authority wey get control over Roman Catholic holy places and possession of keys to Church of the Nativity, wey Greek Orthodox Church bin dey hold before. 