On this day, 171 years ago, March 28, 1854 (February 30, 1854 in the lunar calendar), Britain and France declared war on Russia and the Crimean War broke out. The Crimean War was a war that broke out in Europe from 1853 to 1856. Russia fought on one side and the Ottoman Empire, France, and Britain on the other, and later Piedmont Sardinia joined this party. It was initially called the Seventh Russian-Turkish War, but it was later called the Crimean War because its longest and most important battle broke out on the Crimean Peninsula. On July 3, 1853, Russian troops entered Danube. On October 16, 1853, the Ottoman Empire declared war on Russia. On March 27 and 28, 1854, Britain and France declared war on Russia, and on August 16 a Russian fortress in Orand, on the Baltic Sea, was captured. On December 2, Britain, France and Austria signed an anti-Russian alliance in Vienna. Piedmont Sardinia joined the alliance on January 16, 1855. On September 14, Austria forced Russia to withdraw its troops from the Danube River, but did not help the British and French fleet siege of the fortress of Sevastopol on Crimea. So Austria played an important role in the war, although it did not actively participate in it. On September 8, 1855, 349 days after the siege of Sevastopol, the Anglo-French coalition captured an important fortress. March 30, 1856: The Ottoman Empire, Russia, Sardinia, France, Britain, Austria and Prussia sign the Peace of Paris to officially end the Crimean War. Russia gave up all occupied areas, the Ottoman Empire's territory was guaranteed, and no troops were allowed in the Black Sea.