Plovdiv reached an agreement that the Principality of Bulgaria and Eastern Rumelia had a common government, Parliament, administration, and army. Today 6 September is celebrated as the Unification Day and the Day of Plovdiv. After the unification, Plovdiv remained the second most populous city in Bulgaria after the capital Sofia. The first railway in the city was built in 1874 connecting it with the Ottoman capital, and in 1888, it was linked with Sofia. In 1892 Plovdiv became host of the First Bulgarian Fair with international participation which was succeeded by the International Fair Plovdiv. After the liberation, the first brewery
PFC Lokomotiv Plovdiv club of the railway workers in Plovdiv". The first years of the team are difficult as its performance does not bring about such glory as some of the other teams of the city like Sportclub or Botev Plovdiv. The club is accepted as a member of the national sport federation a whole three years after its creation. Nevertheless, in the early 1940s the team betters their performance and in 1944 wins the Championship of Plovdiv. In an economical aspect the railway club contributes heavily to the development of sports in the region of Plovdiv, making large inputs for the improvement