Wikipedia - FK Jedinstvo Brčko
Fudbalski klub Jedinstvo Brčko (Serbian Cyrillic: Фудбалски клуб Јединство Бpчкo) is a professional association football club from the city of Brčko that is situated in the Brčko District, Bosnia and Herzegovina. The club competes in the First League of the Republika Srpska, a second-tier competition in Bosnia and Herzegovina. The club plays its home matches on the Gradski stadion (City Stadium) in Brčko, which has a capacity of 16,000 seats.
Jedinstvo used to compete in the Yugoslav Second League before the break-up of SFR Yugoslavia. They were promoted to the second league as champions of the third league in 2015.