text: Inter-war period Between the two world wars of the 20th century, communities sprung up closer to the Sava river, in Staro Sajmište and Novo Naselje. The idea of building a new settlement across the Sava was officially presented in 1922 and the first urbanization plans for Belgrade's expansion to the Sava's left bank were drawn up in 1923, but a lack of either funds or the manpower needed to drain out the swampy terrain put them on hold indefinitely. Additionally, the Ministry of Construction rejected the city's plan of expansion. The project was conceived by Đorđe Kovljanski and it included an idea of creating an island from the Savamala neighborhood (he coined the term "Sava amphitheatre") in old Belgrade. He even envisioned the bridge across the northern tip of Ada Ciganlija, across the Sava, which was finally built in 2012. In 1924 Petar Kokotović opened a kafana on Tošin Bunar with the prophetic name Novi Beograd. After 1945, Kokotović was president of the local community of Novo Naselje–Bežanija, which later grew into the municipality of Novi Beograd. In 1924 an airport was built in Bežanija, and in 1928 the Rogožerski factory was constructed. In 1934 plans were expanded to include the creation of a new urbanized area connecting Belgrade and Zemun, as Zemun was administratively annexed to the city of Belgrade in 1929, losing its separate city status in 1934. King Alexander Bridge was also built over the Sava River and a tram line connecting Belgrade and Zemun was established. Also, a Zemun airport was built.