Answer: The Treaty of Paris, signed on 30 March 1856, ended the war. It forbade Russia from basing warships in the Black Sea.
Step-by-step explanation:
Russia was forced to return the city of Kars and all other Ottoman territory which it had taken into its possession. The principalities of Wallachia and Moldovia were thus returned as Ottoman territory, later granted independence and eventually turned into modern-day Romania.