paragraph_text: The history of Ottoman Bulgaria spans nearly 500 years, from the conquest by the Ottoman Empire of the smaller kingdoms emerging from the disintegrating Second Bulgarian Empire in the late 14th century, to the Liberation of Bulgaria in 1878. As a result of the Russo-Turkish War (1877–1878), the Principality of Bulgaria, a self-governing Ottoman vassal state that was functionally independent, was created. In 1885 the autonomous province of Eastern Rumelia came under the control of the Bulgarian Tsar. Bulgaria declared independence in 1908.

paragraph_text: Now with NATO support in the form of air cover, the rebel militia pushed westward, defeating loyalist armies and securing control of the centre of the country. Gaining the support of Amazigh (Berber) communities of the Nafusa Mountains, who had long been persecuted as non-Arabic speakers under Gaddafi, the NTC armies surrounded Gaddafi loyalists in several key areas of western Libya. In August, the rebels seized Zliten and Tripoli, ending the last vestiges of Gaddafist power. On 25 August, the Arab League recognised the NTC to be "the legitimate representative of the Libyan state", on which basis Libya would resume its membership in the League.

paragraph_text: The Western Allied invasion of Germany was coordinated by the Western Allies during the final months of hostilities in the European theatre of World War II. The Allied invasion of Germany started with the Western Allies crossing the Rhine River in March 1945 before fanning out and overrunning all of western Germany from the Baltic in the north to Austria in the south before the Germans surrendered on 8 May 1945. This is known as the ``Central Europe Campaign ''in United States military histories.

paragraph_text: The Kansas Museum of History in Topeka, Kansas, USA, is the state history museum. It presents Kansas history from the prehistoric to modern eras in of exhibits. The galleries feature a train (Atchison, Topeka and Santa Fe locomotive with two cars), full-sized tipi in the Southern Cheyenne style, a 1950s diner, and many other large features. Major topics covered in the main gallery include Native American tribal history, westward movement on the Oregon and Santa Fe trails, early settlers, the Bleeding Kansas and Civil War eras, and Populism at the turn of the 20th century.

paragraph_text: The term Reconstruction Era, in the context of the history of the United States, has two senses: the first covers the complete history of the entire country from 1865 to 1877 following the American Civil War (1861 to 1865); the second sense focuses on the attempted transformation of the Southern United States from 1863 to 1877, as directed by Congress, from states with economies dependent upon slavery, to states in which former slaves were citizens with civil rights. With the three Reconstruction Amendments, the era saw the first amendments to the U.S. Constitution in decades.

paragraph_text: The Central Powers (German: Mittelmächte; Hungarian: Központi hatalmak; Turkish: İttifak Devletleri / Bağlaşma Devletleri; Bulgarian: Централни сили, translit. Tsentralni sili), consisting of Germany, Austria - Hungary, the Ottoman Empire and Bulgaria -- hence also known as the Quadruple Alliance (German: Vierbund) -- was one of the two main factions during World War I (1914 -- 18). It faced and was defeated by the Allied Powers that had formed around the Triple Entente. The Powers' origin was the alliance of Germany and Austria - Hungary in 1879. The Ottoman Empire and Bulgaria did not join until after World War I had begun, although the Ottoman Empire retained close relations with both Germany and Austria - Hungary since the beginning of the 20th century.

paragraph_text: Rila (, pronounced ) is a town in southwestern Bulgaria, in Rila Municipality, part of Kyustendil Province. It is the administrative centre of Rila Municipality, which lies in the southeastern part of Kyustendil Province.

paragraph_text: At the start of the war on 1 September 1939, the Allies consisted of France, Poland and the United Kingdom, and dependent states, such as the British India. Within days they were joined by the independent Dominions of the British Commonwealth: Australia, Canada, New Zealand and South Africa. After the start of the German invasion of North Europe till the Balkan Campaign, the Netherlands, Belgium, Greece and Yugoslavia joined the Allies. After first having cooperated with Germany in invading Poland whilst remaining neutral in the Allied - Axis conflict, the Soviet Union perforce joined the Allies in June 1941 after being invaded by Germany. The United States provided war materiel and money all along, and officially joined in December 1941 after the Japanese attack on Pearl Harbor. China had already been in a prolonged war with Japan since the Lugou Bridge Incident of 1937, but officially joined the Allies in 1941.

paragraph_text: Born in Manhattan, he majored in European history at Brandeis, and later earned a master's degree in the same subject from Cornell. He was studying for a Ph.D. in history at the University of Chicago when he quit to join the civil rights movement in the South. He became a full-time organizer for the Student Nonviolent Coordinating Committee (or SNCC, pronounced "snick"). Stokely Carmichael, later chairman of SNCC, called Samstein "one in a million".

paragraph_text: At the start of the war on 1 September 1939, the Allies consisted of France, Poland and the United Kingdom, as well as their dependent states, such as British India. Within days they were joined by the independent Dominions of the British Commonwealth: Australia, Canada, New Zealand and South Africa. After the start of the German invasion of North Europe until the Balkan Campaign, the Netherlands, Belgium, Greece, and Yugoslavia joined the Allies. After first having cooperated with Germany in invading Poland whilst remaining neutral in the Allied - Axis conflict, the Soviet Union perforce joined the Allies in June 1941 after being invaded by Germany. The United States provided war materiel and money all along, and officially joined in December 1941 after the Japanese attack on Pearl Harbor. China had already been in a prolonged war with Japan since the Marco Polo Bridge Incident of 1937, but officially joined the Allies in 1941.

paragraph_text: The 2014 European Cross Country Championships was the 21st edition of the cross country running competition for European athletes which was held in Samokov, Bulgaria, on 14 December 2014. The events were hosted at Borovets – a winter sports and ski resort in the Rila mountains.

paragraph_text: Some 28 Italian divisions participated in the Balkan invasions. The coast of Yugoslavia was occupied by the Italian Army, while the rest of the country was divided between the Axis forces (a German and Italian puppet State of Croatia was created, under the nominal sovereignty of Prince Aimone, Duke of Aosta, but actually governed by the Croatian fascist Ante Pavelić). The Italians assumed control of most of Greece with their 11th Army, while the Bulgarians occupied the northern provinces and the Germans the strategically most important areas. Italian troops would occupy parts of Greece and Yugoslavia until the Italian armistice with the Allies in September 1943.

paragraph_text: The First World War was a disaster for the Ottoman Empire. British and allied forces had conquered Baghdad, Damascus, and Jerusalem during the war and most of the Ottoman Empire was divided amongst the European allies. At the San Remo conference of April 1920, the French were granted a mandate over Syria and the British were granted one over Palestine and Mesopotamia. On 10 August 1920, Mehmed's representatives signed the Treaty of Sèvres, which recognised the mandates and recognised Hejaz as an independent state.

paragraph_text: Libya (; ; ), officially the State of Libya, is a country in the Maghreb region in North Africa, bordered by the Mediterranean Sea to the north, Egypt to the east, Sudan to the southeast, Chad to the south, Niger to the southwest, Algeria to the west, and Tunisia to the northwest. The sovereign state is made of three historical regions: Tripolitania, Fezzan and Cyrenaica. With an area of almost , Libya is the fourth largest country in Africa, and is the 16th largest country in the world. Libya has the 10th-largest proven oil reserves of any country in the world. The largest city and capital, Tripoli, is located in western Libya and contains over one million of Libya's six million people. The second-largest city is Benghazi, which is located in eastern Libya.

paragraph_text: World War II (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although related conflicts began earlier. The vast majority of the world's countries -- including all of the great powers -- eventually formed two opposing military alliances: the Allies and the Axis. It was the most global war in history; it directly involved more than 100 million people from over 30 countries. In a state of total war, the major participants threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. World War II was the deadliest conflict in human history, marked by 50 to 85 million fatalities, most of which were civilians in the Soviet Union and China. It included massacres, the genocide of the Holocaust, strategic bombing, premeditated death from starvation and disease and the only use of nuclear weapons in war.

paragraph_text: As a result of this conflict, the Ottoman Turks ceded the provinces of Tripolitania, Fezzan, and Cyrenaica to Italy. These provinces together formed what became known as Libya.

paragraph_text: The Serbian revolution (1804–1815) marked the beginning of an era of national awakening in the Balkans during the Eastern Question. Suzerainty of Serbia as a hereditary monarchy under its own dynasty was acknowledged de jure in 1830. In 1821, the Greeks declared war on the Sultan. A rebellion that originated in Moldavia as a diversion was followed by the main revolution in the Peloponnese, which, along with the northern part of the Gulf of Corinth, became the first parts of the Ottoman Empire to achieve independence (in 1829). By the mid-19th century, the Ottoman Empire was called the "sick man" by Europeans. The suzerain states – the Principality of Serbia, Wallachia, Moldavia and Montenegro – moved towards de jure independence during the 1860s and 1870s.

paragraph_text: The Battle of Lepanto was a naval engagement that took place on 7 October 1571 when a fleet of the Holy League, of which the Venetian Empire and the Spanish Empire were the main powers, inflicted a major defeat on the fleet of the Ottoman Empire in the Gulf of Patras, where Ottoman forces sailing westward from their naval station in Lepanto (the Venetian name of ancient Naupactus Ναύπακτος, Ottoman İnebahtı) met the fleet of the Holy League sailing east from Messina, Sicily. The Holy League was a coalition of European Catholic maritime states arranged by Pope Pius V and led by Adm. John of Austria, as agreed between Philip II of Spain -- who largely financed the League -- and the Venetian Republic (main contributor of ships).

paragraph_text: The establishment of the Swiss Confederation is traditionally dated to 1 August 1291, which is celebrated annually as the Swiss National Day. The country has a long history of armed neutrality—it has not been in a state of war internationally since 1815—and did not join the United Nations until 2002. Nevertheless, it pursues an active foreign policy and is frequently involved in peace-building processes around the world. In addition to being the birthplace of the Red Cross, Switzerland is home to numerous international organizations, including the second largest UN office. On the European level, it is a founding member of the European Free Trade Association, but notably it is not part of the European Union, nor the European Economic Area. However the country does participate in the Schengen Area and the EU's single market through a number of bilateral treaties.

paragraph_text: In 1820-1830’s the Ottoman Empire endured a number of strikes which challenged the existence of the country. The Greek Uprising (began in the spring of 1821) evidenced internal and military weakness of Ottoman Empire and caused severe atrocities by Ottoman military forces (see Chios massacre). The disbandment of the centuries-old Janissary corps by Sultan Mahmud II on 15 June 1826 (Auspicious Incident) was a good deed for the country in the longer term, but it has deprived the country from its army forces for the nearest future. In 1827 the allied Anglo-Franco-Russian fleet destroyed almost all the Ottoman naval forces during the Battle of Navarino. In 1830 Greece becomes an independent state after 10 years of independence war and the Russo-Turkish War of 1828–1829. According to the Treaty of Adrianople (1829) Russian and European commercial ships were authorized to freely pass through Black Sea straits, Serbia received autonomy, and Danubian Principalities (Moldavia and Walachia) became the territories under Russian protection.

Question: When did the country seizing Libya in 1911 from the main empire of Ottoman era in the history of the country having Rila join the allies in ww2?
Answer: September 1943