Question: When did the country where the commune of Sopot is located join the Allies in WWII?

full_context: Document 1: Sopot, Dolj: Sopot is a commune in Dolj County, Romania with a population of 2,001 people. It is composed of seven villages: Bașcov, Beloț, Cernat, Pereni, Pietroaia, Sârsca and Sopot.
Document 2: Josip Broz Tito: On 12 September 1944, King Peter II called on all Yugoslavs to come together under Tito's leadership and stated that those who did not were "traitors", by which time Tito was recognized by all Allied authorities (including the government-in-exile) as the Prime Minister of Yugoslavia, in addition to commander-in-chief of the Yugoslav forces. On 28 September 1944, the Telegraph Agency of the Soviet Union (TASS) reported that Tito signed an agreement with the Soviet Union allowing "temporary entry" of Soviet troops into Yugoslav territory which allowed the Red Army to assist in operations in the northeastern areas of Yugoslavia. With their strategic right flank secured by the Allied advance, the Partisans prepared and executed a massive general offensive which succeeded in breaking through German lines and forcing a retreat beyond Yugoslav borders. After the Partisan victory and the end of hostilities in Europe, all external forces were ordered off Yugoslav territory.
Document 3: Romania in World War II: On 23 August 1944, with the Red Army penetrating German defenses during the Jassy -- Kishinev Offensive, King Michael I of Romania led a successful coup against the Axis with support from opposition politicians and most of the army. Michael I, who was initially considered to be not much more than a figurehead, was able to successfully depose the Antonescu dictatorship. The King then offered a non-confrontational retreat to German ambassador Manfred von Killinger. But the Germans considered the coup ``reversible ''and attempted to turn the situation around by military force. The Romanian First, Second (forming), and what little was left of the Third and the Fourth Armies (one corps) were under orders from the King to defend Romania against any German attacks. King Michael offered to put the Romanian Army, which at that point had a strength of nearly 1,000,000 men, on the side of the Allies. Surprisingly, with the Red Army occupying parts of Romania, Stalin immediately recognized the king and the restoration of the conservative Romanian monarchy. (Deutscher, Stalin. 1967, p. 519)
Document 4: Warsaw: By July 1944, the Red Army was deep into Polish territory and pursuing the Germans toward Warsaw. Knowing that Stalin was hostile to the idea of an independent Poland, the Polish government-in-exile in London gave orders to the underground Home Army (AK) to try to seize control of Warsaw from the Germans before the Red Army arrived. Thus, on 1 August 1944, as the Red Army was nearing the city, the Warsaw Uprising began. The armed struggle, planned to last 48 hours, was partially successful, however it went on for 63 days. Eventually the Home Army fighters and civilians assisting them were forced to capitulate. They were transported to PoW camps in Germany, while the entire civilian population was expelled. Polish civilian deaths are estimated at between 150,000 and 200,000.
Document 5: Lipovu: Lipovu is a commune in Dolj County, Romania with a population of 3,189 people. It is composed of two villages, Lipovu and Lipovu de Sus.
Document 6: Operation Uranus: At 07:20 Moscow time on 19 November, Soviet forces on the northern flank of the Axis forces at Stalingrad began their offensive; forces in the south began on 20 November. Although Romanian units were able to repel the first attacks, by the end of 20 November the Third and Fourth Romanian armies were in headlong retreat, as the Red Army bypassed several German infantry divisions. German mobile reserves were not strong enough to parry the Soviet mechanized spearheads, while the Sixth Army did not react quickly enough nor decisively enough to disengage German armored forces in Stalingrad and reorient them to defeat the impending threat. By late 22 November Soviet forces linked up at the town of Kalach, encircling some 290,000 men east of the Don River. Instead of attempting to break out of the encirclement, German leader Adolf Hitler decided to keep Axis forces in Stalingrad and resupply them by air. In the meantime, Soviet and German commanders began to plan their next movements.
Document 7: Scăești: Scăești is a commune in Dolj County, Romania with a population of 2,275 people. It is composed of two villages, Scaești and Valea lui Pătru.
Document 8: Vela, Dolj: Vela is a commune in Dolj County, Romania with a population of 2,420 people. It is composed of eight villages: Bucovicior, Cetățuia, Desnățui, Gubaucea, Segleț, Suharu, Știubei, Vela.
Document 9: Sopot Ice Piedmont: Sopot Ice Piedmont (Lednik Sopot \'led-nik 'so-pot\) is situated on Burgas Peninsula, Livingston Island in the South Shetland Islands, Antarctica, northeast of Iskar Glacier and north of Ropotamo, Strandzha and Pautalia Glaciers. It extends 7.5 km in east-west direction and 2.4 km in south-north direction, drains the northern slopes of Delchev Ridge east of Delchev Peak and Ghiaurov Peak, and flows northward into Moon Bay between Rila Point to the west and Malyovitsa Crag near Renier Point to the east.
Document 10: Poboru: Poboru is a commune in Olt County, Romania. It is composed of six villages: Albești, Cornățelu, Creți, Poboru, Seaca and Surpeni.
Document 11: Orodel: Orodel is a commune in Dolj County, Romania with a population of 3,242 people. It is composed of five villages: Bechet, Călugărei, Cornu, Orodel, and Teiu.
Document 12: Dolhasca: Dolhasca () is a town in Suceava County, north-eastern Romania. It is situated in the historical region of Moldavia. Dolhasca is the eighth largest urban settlement in the county, with a population of 9,792 inhabitants, according to the 2011 census. It was declared a town in 2004, along with seven other localities in Suceava County. The town administers seven villages: Budeni, Gulia, Poiana, Poienari, Probota, Siliștea Nouă and Valea Poienei.
Document 13: Vladimir Stoychev: In 1944, Stoychev became a member of the Fatherland Front's Bureau of the National Committee. During World War II, Stoychev was in command of the Bulgarian First Army after the country switched allegiance to the Allies. Under Stoychev, the Bulgarian First Army helped the Red Army and Yugoslav Partisans drawing the Nazis out of much of Yugoslavia and Hungary, reaching the Austrian Alps by May 1945. On 8 May 1945, Vladimir Stoychev signed a demarkation agreement with British V Corps commander Charles Keightley in southern Austria. On 24 June 1945, he took part in the Moscow Victory Parade.
Document 14: Ukraine: German armies invaded the Soviet Union on 22 June 1941, initiating nearly four years of total war. The Axis initially advanced against desperate but unsuccessful efforts of the Red Army. In the encirclement battle of Kiev, the city was acclaimed as a "Hero City", because of its fierce resistance. More than 600,000 Soviet soldiers (or one-quarter of the Soviet Western Front) were killed or taken captive there, with many suffering severe mistreatment.Although the majority of Ukrainians fought in or alongside the Red Army and Soviet resistance, in Western Ukraine an independent Ukrainian Insurgent Army movement arose (UPA, 1942). Created as armed forces of the underground (Organization of Ukrainian Nationalists, OUN) which had developed in interwar Poland as a reactionary nationalist organization. During the interwar period, the Polish government's policies towards the Ukrainian minority were initially very accommodating, however by the late 1930s they became increasingly harsh due to civil unrest. Both organizations, OUN and UPA supported the goal of an independent Ukrainian state on the territory with a Ukrainian ethnic majority. Although this brought conflict with Nazi Germany, at times the Melnyk wing of the OUN allied with the Nazi forces. Also, UPA divisions carried out massacres of ethnic Poles, which brought reprisals. After the war, the UPA continued to fight the USSR until the 1950s. At the same time, the Ukrainian Liberation Army, another nationalist movement, fought alongside the Nazis.
Document 15: Constantin Sănătescu: Constantin Sănătescu (14 January 1885, Craiova – 8 November 1947, Bucharest) was a Romanian statesman who served as the 44th Prime Minister of Romania after the 23 August 1944 coup, through which Romania left the Axis Powers and joined the Allies.
ground_truth: 23 August 1944
sub_queries: Sopot >> country Answer: Romania
when did Romania join the allies in ww2 Answer: 23 August 1944