a result. A second Russian counterattack, at Inkerman (November 1854), ended in a stalemate as well. By 1855, the Italian Kingdom of Sardinia sent an expeditionary force to Crimea sided with France, Britain and the Ottoman Empire. The front settled into the siege of Sevastopol, involving brutal conditions for troops on both sides. Smaller military actions took place in the Baltic (1854–1856; see Åland War), the Caucasus (1853–1855), the White Sea (July–August 1854) and the North Pacific (1854–1855). Sevastopol finally fell after eleven months, after the French had assaulted Fort Malakoff. Isolated and facing a bleak prospect of invasion by the West if the war continued, Russia sued for peace in March 1856. France and Britain welcomed the development, owing to the conflict's domestic unpopularity. The Treaty of Paris, signed on 30 March 1856, ended the war. It forbade Russia to base warships in the Black Sea. The Ottoman vassal states of Wallachia and Moldavia became largely independent. Christians in the Ottoman Empire gained a degree of official equality, and the Orthodox Church regained control of the Christian churches in dispute. The Crimean War was one of the first conflicts in which military forces used modern technologies such as explosive naval shells, railways and telegraphs. The war was also one of the first to be documented extensively in written reports and in photographs. The war quickly became a symbol of logistical, medical and tactical failures and of mismanagement. The reaction in Britain led to a demand for professionalisation of medicine, most famously achieved by Florence Nightingale, who gained worldwide attention for pioneering modern nursing while she treated the wounded. The Crimean War marked a turning point for the Russian Empire. The war weakened the Imperial Russian Army, drained the treasury and undermined Russia's influence in Europe. The empire would take decades to recover. Russia's humiliation forced its educated elites to identify its problems and to recognise the need for fundamental reforms. They saw rapid modernisation as the sole way to recover the empire's status as a European power. The war thus became a catalyst for reforms of Russia's social institutions, including the abolition of serfdom and overhauls in the justice system, local self-government, education and military service. Eastern Question As the Ottoman Empire steadily weakened during the 19th century, the Russian Empire stood poised to take advantage by expanding southward. In the 1850s, the British and the French Empires were