History of Plovdiv since 1886), supported by the Greek state and nationalistic organizations, was also the forum of the Greek communities of the wider region. The city was captured from the Ottomans during the Battle of Philippopolis in 1878. According to the Treaty of San Stefano on 3 March 1878 the Principality of Bulgaria included the lands with predominantly Bulgarian population. Plovdiv was selected as a capital of the restored country and as a seat of the Temporary Russian Government. Great Britain and Austria-Hungary, however, did not approve that treaty and the final result of the war was concluded in the Congress of
Plovdiv Airport and a tie-up between Hainan and Plovdiv Airport Invest. On 28 March 2018, Bulgarian Government awarded the consortium of HNA Group and Plovdiv Airport Invest a 35-year-long concession on Plovdiv airport in return for investments reaching €79 million, including a new cargo and passenger terminal. On 19 of July the consortium of HNA Group and Plovdiv Airport Invest have declared that it won't sign the concession contract which opens the road for the classified on the second place to take the concession. On the west side of the airport is located 24th Helicopter Air Base of the Bulgarian Air Force,