paragraph_text: Ulyanovsk Oblast (Russian: Улья́новская о́бласть, Ulyanovskaya oblast) is a federal subject of Russia (an oblast). It is located in the Volga Federal District. Its administrative center is the city of Ulyanovsk. Population: 1,292,799 (2010 Census).

paragraph_text: The Volga Delta is the largest river delta in Europe, and occurs where Europe's largest river system, the Volga River, drains into the Caspian Sea in Russia's Astrakhan Oblast, north-east of the republic of Kalmykia. The delta is located in the Caspian Depression—the far eastern part of the delta lies in Kazakhstan. The delta drains into the Caspian approximately 60 km downstream from the city of Astrakhan.

paragraph_text: In the spring of 1793, French colonial refugees, some with slaves, arrived from Cap Français, Saint - Domingue. The 2,000 immigrants were fleeing the slave revolution in the north of the island. They crowded the port of Philadelphia, where the first yellow fever epidemic in 30 years began in the city in August. It is likely that the refugees and ships carried the yellow fever virus and mosquitoes. It is transmitted during mosquito bites. The mosquitoes easily breed in small amounts of standing water. The medical community and others in 1793 did not understand the role of mosquitoes in the transmission of yellow fever and other diseases. Physicians and other survivors of the epidemic wrote extensively about it trying to learn from the crisis.

paragraph_text: The Ordovician Period started at a major extinction event called the Cambrian-Ordovician extinction events some time about 485.4 ± 1.9 Ma. During the Ordovician the southern continents were collected into a single continent called Gondwana. Gondwana started the period in the equatorial latitudes and, as the period progressed, drifted toward the South Pole. Early in the Ordovician the continents Laurentia, Siberia and Baltica were still independent continents (since the break-up of the supercontinent Pannotia earlier), but Baltica began to move toward Laurentia later in the period, causing the Iapetus Ocean to shrink between them. Also, Avalonia broke free from Gondwana and began to head north toward Laurentia. The Rheic Ocean was formed as a result of this. By the end of the period, Gondwana had neared or approached the pole and was largely glaciated.

paragraph_text: The Danube (/ ˈdænjuːb / DAN - ewb, known by various names in other languages) is Europe's second - longest river, after the Volga River. It is located in Central and Eastern Europe.

paragraph_text: Yaroslavl () is a city and the administrative center of Yaroslavl Oblast, Russia, located northeast of Moscow. The historic part of the city, a World Heritage Site, is located at the confluence of the Volga and the Kotorosl Rivers. It is one of the Golden Ring cities, a group of historic cities northeast of Moscow that have played an important role in Russian history. In 2010, the city had a population of 591,486.

paragraph_text: Alan Kurdi (Kurdish: Alan Kurdî‎), initially reported as Aylan Kurdi, was a three-year-old  Syrian boy of Kurdish ethnic background whose image made global headlines after he drowned on 2 September 2015 in the Mediterranean Sea. He and his family were Syrian refugees trying to reach Europe amid the European refugee crisis (see timeline). Photographs of his body were taken by Turkish journalist Nilüfer Demir and quickly spread around the world, prompting international responses. Because Kurdî's family had reportedly been trying to reach Canada, his death and the wider refugee crisis immediately became an issue in the 2015 Canadian federal election.

paragraph_text: Skhodnya River (), also known as Sukhodnya, Vkhodnya, Vykhodnya and Vskhodnya is a river in the northwest of Moscow, the second largest tributary (after the Yauza River) of the Moskva River. The length of the Skhodnya is 47 km (5 km in Moscow proper). The area of its basin is 17,2 km² (within the city). The Skhodnya originates near the village of Alabushevo (part of Zelenograd) and flows into the Moskva River near the Tushino Airfield. The Skhodnya River is connected with a derivational canal, which supplies water from the Volga River through the Khimki Reservoir (with the help of the Skhodnenskaya hydroelectric plant) to Moscow for sanitary irrigation.

paragraph_text: Molmys River () is a river in Perm Krai, Russia, a left tributary of the Yazva River. It is long, and the area of its drainage basin is . It starts on the southeastern slope of Mount Vogulsky Kamen, in the middle part of the Kvarkush mountain range. It flows through the southeastern portion of Krasnovishersky District, its mouth located upstream of the settlement Krasnyi Bereg. There are many rapids throughout the river, and the bottom is rocky.

paragraph_text: The European migrant crisis, or the European refugee crisis, is a term given to a period beginning in 2015 when rising numbers of people arrived in the European Union (EU), travelling across the Mediterranean Sea or overland through Southeast Europe. It is part of a pattern of increased immigration to Europe from other continents which began in the late 20th century and which has encountered resistance in many European countries.

paragraph_text: Consequently, the population of Israel rose from 800,000 to two million between 1948 and 1958. Between 1948 and 1970, approximately 1,150,000 Jewish refugees relocated to Israel. The immigrants came to Israel for differing reasons. Some believed in a Zionist ideology, while others moved to escape persecution. There were others that did it for the promise of a better life in Israel and a small number that were expelled from their homelands, such as British and French Jews in Egypt after the Suez Crisis.

paragraph_text: The Saint Charles River () is a branch of the Saint Lawrence River that starts in Salaberry-de-Valleyfield, Quebec. The river divides the Grande-Île and the Island of Salaberry, which are located approximately 50km east of Montreal. The river is 8km long, and drops 24m over its course from Lake Saint Francis east to Lake Saint-Louis.

paragraph_text: The Volga River, the largest in Europe, drains 20% of the European land area and is the source of 80% of the Caspian's inflow. Its lower reaches are heavily developed with numerous unregulated releases of chemical and biological pollutants. The UN Environment Programme warns that the Caspian "suffers from an enormous burden of pollution from oil extraction and refining, offshore oil fields, radioactive wastes from nuclear power plants and huge volumes of untreated sewage and industrial waste introduced mainly by the Volga River".The magnitude of fossil fuel extraction and transport activity in the Caspian also poses a risk to the environment. The island of Vulf off Baku, for example, has suffered ecological damage as a result of the petrochemical industry; this has significantly decreased the number of species of marine birds in the area. Existing and planned oil and gas pipelines under the sea further increase the potential threat to the environment.

paragraph_text: Dubna (Russian: Дубна) is a river in Vladimir Oblast and Moscow Oblast in Russia, a right tributary of the Volga. The length of the river is 167 kilometres. The area of its basin is 5,350 km². Its largest tributary is the Sestra River. The town of Dubna is located at the confluence of the Dubna and Volga rivers.

paragraph_text: Some new immigrants arrived as refugees with no possessions and were housed in temporary camps known as ma'abarot; by 1952, over 200,000 immigrants were living in these tent cities. During this period, food, clothes and furniture had to be rationed in what became known as the Austerity Period. The need to solve the crisis led Ben-Gurion to sign a reparations agreement with West Germany that triggered mass protests by Jews angered at the idea that Israel could accept monetary compensation for the Holocaust.

paragraph_text: Krugman's contention (that the growth of a commercial real estate bubble indicates that U.S. housing policy was not the cause of the crisis) is challenged by additional analysis. After researching the default of commercial loans during the financial crisis, Xudong An and Anthony B. Sanders reported (in December 2010): "We find limited evidence that substantial deterioration in CMBS [commercial mortgage-backed securities] loan underwriting occurred prior to the crisis." Other analysts support the contention that the crisis in commercial real estate and related lending took place after the crisis in residential real estate. Business journalist Kimberly Amadeo reports: "The first signs of decline in residential real estate occurred in 2006. Three years later, commercial real estate started feeling the effects. Denice A. Gierach, a real estate attorney and CPA, wrote:

paragraph_text: After an initial rebound from the 2009 world economic crisis, Africa’s economy was undermined in the year 2011 by the Arab uprisings. The continent’s growth fell back from 5% in 2010 to 3.4% in 2011. With the recovery of North African economies and sustained improvement in other regions, growth across the continent is expected to accelerate to 4.5% in 2012 and 4.8% in 2013. Short-term problems for the world economy remain as Europe confronts its debt crisis. Commodity prices—crucial for Africa—have declined from their peak due to weaker demand and increased supply, and some could fall further. But prices are expected to remain at levels favourable for African exporter.

paragraph_text: Juan José Castelli (usually abbreviated to Castelli) is a town in the province of Chaco, Argentina. It is located 274 km from the provincial capital Resistencia and has about 27,000 inhabitants as per the . It is the head town of the General Güemes Department. Its population is mainly of Volga German descent.

paragraph_text: The Viking Truvor () (formerly Sergey Kirov) is a "Dmitriy Furmanov"-class (302, BiFa129M) Soviet/Russian river cruise ship, cruising in the Volga – Neva basin. The ship was built by VEB Elbewerften Boizenburg/Roßlau at their shipyard in Boizenburg, East Germany, and entered service in 1987. Her home port is currently Saint Petersburg.

paragraph_text: Dubna () is a river in Vladimir Oblast and Moscow Oblast in Russia, a right tributary of the Volga. The length of the river is 167 kilometres. The area of its basin is 5,350 km². Its largest tributary is the Sestra River. The town of Dubna is located at the confluence of the Dubna and Volga rivers.

Question: When did the refugee crisis start in the continent of Volga River?
Answer: 2015