Following the creation of the VTZ, industrial development continued at an unprecedented pace. The first telephone exchange was installed in 1858, and in 1868 the first industrial brewery was opened by Nikola Mesarović. The first printing press was founded in 1870. To connect the city's burgeoning military industry as well as its production of iron ploughs to the rest of Serbia's regions, the Belgrade–Niš railroad was built in 1886. To serve its industrial population, Serbia's first grammar school ("gimnazija)", the city's first pharmacy, and its first cinema, located in a local "kafana", were all built during the remainder of the 19th century, along with Kragujevac's Great (or Upper) Park and, in 1891, its first regulatory urban plan. The city's industrialism characterized it among its European peers, along with its workers' demonstrations, known as the "Crveni barjak" ('Red flag') demonstrations, first held on 27 February 1876.