Question: when did Germany form an alliance with the European country seizing Libya in 1911 from the main subject of Ottoman era in the history of the country having Rila?

full_context: Document 1: Ottoman Tripolitania: 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.
Document 2: Military history of Italy during World War I: On 3 May 1915 Italy officially revoked the Triple Alliance. In the following days Giolitti and the neutralist majority of the Parliament opposed declaring war, while nationalist crowds demonstrated in public areas for it. (The nationalist poet Gabriele D'Annunzio called this period le radiose giornate di Maggio -- ``the sunny days of May ''). Giolitti had the support of the majority of Italian parliament so on 13 May Salandra offered his resignation to King Victor Emmanuel III, but then Giolitti learned that the London Pact was already signed: fearful of a conflict between the Crown and the Parliament and the consequences on both internal stability and foreign relationships, Giolitti accepted the fait accompli, declined to succeed as prime minister and Salandra's resignation was not accepted. On 23 May, Italy declared war on Austria - Hungary. This was followed by declarations of war on the Ottoman Empire (21 August 1915, following an ultimatum of 3 August), Bulgaria (19 October 1915) and the German Empire (28 August 1916).
Document 3: Ottoman Bulgaria: 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.
Document 4: Central Powers: 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.
Document 5: Libya: 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.
Document 6: Melnik, Bulgaria: Melnik (, , "Meleniko") is a town in Blagoevgrad Province, Southwestern Bulgaria, in the Southwestern Pirin Mountains, about 440 m above sea level. The town is an architectural reserve and 96 of its buildings are cultural monuments. With a population of 385, it is the smallest town in Bulgaria, retaining its town status today for historical reasons. It is situated on the foothills of the Pirin mountain range and is overlooked by the Melnik Earth Pyramids.
Document 7: Ottoman Empire: 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.
Document 8: Decline and modernization of the Ottoman Empire: The Russo - Turkish War of 1877 -- 1878 had its origins in a rise in nationalism in the Balkans as well as in the Russian goal of recovering territorial losses it had suffered during the Crimean War, reestablishing itself in the Black Sea and following the political movement attempting to free Balkan nations from the Ottoman Empire. As a result of the war, the principalities of Romania, Serbia and Montenegro, each of which had de facto sovereignty for some time, formally proclaimed independence from the Ottoman Empire. After almost half a millennium of Ottoman domination (1396 -- 1878), the Bulgarian state was reestablished as the Principality of Bulgaria, covering the land between the Danube River and the Balkan Mountains (except Northern Dobrudja which was given to Romania) and the region of Sofia, which became the new state's capital. The Congress of Berlin also allowed Austria - Hungary to occupy Bosnia and Herzegovina and Great Britain to take over Cyprus, while the Russian Empire annexed Southern Bessarabia and the Kars region.
Document 9: Rila, Bulgaria: 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.
Document 10: Ottoman Empire: The Ottoman bashi-bazouks brutally suppressed the Bulgarian uprising of 1876, massacring up to 100,000 people in the process. The Russo-Turkish War (1877–78) ended with a decisive victory for Russia. As a result, Ottoman holdings in Europe declined sharply; Bulgaria was established as an independent principality inside the Ottoman Empire, Romania achieved full independence. Serbia and Montenegro finally gained complete independence, but with smaller territories. In 1878, Austria-Hungary unilaterally occupied the Ottoman provinces of Bosnia-Herzegovina and Novi Pazar.
Document 11: Rila Point: Rila Point (Nos Rila \'nos 'ri-la\) is a low, ice-free point on the south coast of Moon Bay, projecting 330 m west-northwestwards from Burgas Peninsula on Livingston Island in the South Shetland Islands, Antarctica, and forming the east side of the entrance to Bruix Cove. The point is named after Rila Mountain, Bulgaria.
Document 12: Muammar Gaddafi: From childhood, Gaddafi was aware of the involvement of European colonialists in Libya; his nation was occupied by Italy, and during the North African Campaign of World War II it witnessed conflict between Italian and British troops. According to later claims, Gaddafi's paternal grandfather, Abdessalam Bouminyar, was killed by the Italian Army during the Italian invasion of 1911. At World War II's end in 1945, Libya was occupied by British and French forces. Although Britain and France intended on dividing the nation between their empires, the General Assembly of the United Nations (UN) declared that the country be granted political independence. In 1951, the UN created the United Kingdom of Libya, a federal state under the leadership of a pro-western monarch, Idris, who banned political parties and established an absolute monarchy.
Document 13: Italian Tripolitania: Italian Tripolitania was an Italian colony, located in present-day western Libya, that existed from 1911 to 1934. It was part of the territory conquered from the Ottoman Empire after the Italo-Turkish War in 1911. Italian Tripolitania included the western northern half of Libya, with Tripoli as its main city. In 1934, it was unified with Cyrenaica in the colony of Italian Libya.
Document 14: Triple Alliance (1882): The Triple Alliance was a secret agreement between Germany, Austria - Hungary, and Italy. It was formed on 20 May 1882 and renewed periodically until it expired in 1915 during World War I. Germany and Austria - Hungary had been closely allied since 1879. Italy sought support against France shortly after it lost North African ambitions to the French. Each member promised mutual support in the event of an attack by any other great power. The treaty provided that Germany and Austria - Hungary were to assist Italy if it was attacked by France without provocation. In turn, Italy would assist Germany if attacked by France. In the event of a war between Austria - Hungary and Russia, Italy promised to remain neutral.
Document 15: Ril Lake (Ontario): Ril Lake is a lake of Ontario, Canada. This lake is in the Township of Lake of Bays. Nearest Towns are Baysville, Ontario and Dorset, Ontario. It includes both year round and seasonal residents. Two main access roads, North and South Ril Lake Road. Both branch into smaller roads further in including but not limited to Watson Road, James Point Road, Ril Cove Road, McArthur Point Road and Muskoka Bob Road. There is a Ril Lake Road Association. It is forested with mixed deciduous and coniferous trees.
ground_truth: 20 May 1882
sub_queries: Rila >> country Answer: Bulgaria
Ottoman era in the history of Bulgaria >> main subject Answer: Ottoman Empire
which european state seized libya from Ottoman Empire in 1911 Answer: Italy
when did Italy and germany form an alliance Answer: 20 May 1882