Harju County ( or Harjumaa), is one of the fifteen counties of Estonia. It is situated in Northern Estonia, on the southern coast of the Gulf of Finland, and borders Lääne-Viru County to the east, Järva County to the southeast, Rapla County to the south, and Lääne County to the southwest. The capital and largest city of Estonia, Tallinn, is situated in Harju County. Harju County is the largest county in Estonia in terms of population, as almost half (45%) of the Estonia's population lives in Harju County.
History
Ancient history
The territory of modern Harju County consists mostly of two ancient Estonian counties: Revala, around what is now Tallinn, and Harjumaa, which was situated south of Revala and presently rests mostly in Rapla County. Lindanise, then a small trading post at the Gulf of Finland, served as the capital of Revala. It eventually grew into the mostly German-populated Hanseatic town of Reval and later into the Estonian capital, Tallinn.
Conquest
In 1219, the Danish King, Valdemar II, landed in Lindanise (Danish: Lyndanisse) and conquered both Revala and Harju counties, while the inhabitants were forced into Christianity. At the end of the Livonian Crusade (1208–1227 in Estonia), both counties were captured by the Order of the Sword Brothers until given back to Denmark with the Treaty of Stensby in 1238.
The Danes built the Toompea Castle (Castrum Danorum) on Toompea Hill in Tallinn, which quickly became the biggest settlement in Estonia. In 1248, it was the first settlement in Estonia to receive its town rights, and in 1285 it became the northernmost member of the Hanseatic League.
German dominance led to the St. George's Night Uprising, which broke out in 1343 with the burning of Padise Abbey in modern Padise Parish. The uprising led Denmark to sell its possessions in Northern Estonia to the Livonian Order. In 1561, after the outbreak of the Livonian War, the nobility of North Estonia and the Tallinn Town Council declared loyalty to Sweden. Tallinn and other Swedish-occupied territories gained during warfare were secured by the Treaty of Plyussa.
During the Great Northern War, Harju was one of the few regions in Estonia untouched by warfare for a long time. Nonetheless, Harju County was greatly affected by the 1710-1713 Plague that killed more than eighty percent of the county's population. Russian forces finally arrived in 1710 and laid siege to Tallinn for a month until the Swedish garrison surrendered, thus ending the Great Northern War in Estonia. Russian rule was secured with the Treaty of Nystad in 1721. The plague raged on for several years, eventually leaving several parts of the county completely empty of human habitation.
Russian rule
Imperial Russian rule started with the construction of naval harbours in Tallinn and Paldiski (Swedish: Rogerwiek). Russian Tsar Peter I visited Tallinn at least nine times between 1711 and 1723. He personally opened the construction for Tallinn Naval Harbour in 1714 and Paldiski Naval Harbour in 1718.
In 1870, the Paldiski-Tallinn-St. Petersburg Railway was opened, after which several smaller settlements along the line - Paldiski, Keila, Saue, Nõmme, Aruküla, Raasiku, Kehra and Aegviidu (then in Viru County) - started to grow. Several elements of Peter the Great's Naval Fortress were built in Harju County and its headquarters were in Tallinn.
During World War I in 1914, the native population of Naissaar island was expelled from the island and it was turned into a military base. A narrow-gauge railway network was built on the island. Tallinn was the site for the very beginning of the October Revolution when the Estonian Bolshevik Jaan Anvelt took power in Tallinn on 5 November 1917, two days before the Revolution started in Petrograd. On 9 November 1917, the Bolsheviks took power from Governor Jaan Poska. After the coup, refusing to cooperate with the Estonian Soviet Executive Committee, the Estonian Provincial Assembly (Estonian: Maanõukogu) in Tallinn declared sovereignty from the Russian Empire on 28 November 1917. In December 1917, Russian sailors under the leadership of Stepan Maximovich Petrichenko declared the "Soviet Republic of Soldiers and Fortress-Builders of Naissaar". They were ousted by German forces on 26 February 1918.
Republic of Estonia
The Republic of Estonia was proclaimed in Tallinn on 24 February 1918 while German occupation followed on the next day. German rule ended with the November Revolution in Germany. During the Estonian War of Independence, Soviet troops were halted only 40 km east of Tallinn by the end of 1918. Tallinn was the site of a failed Communist coup d'état attempt of 1924.