Budapest later, with the help of the Russian Empire. 1867 was the year of Reconciliation that brought about the birth of Austria-Hungary. This made Budapest the twin capital of a dual monarchy. It was this compromise which opened the second great phase of development in the history of Budapest, lasting until World War I. In 1849 the Chain Bridge linking Buda with Pest was opened as the first permanent bridge across the Danube and in 1873 Buda and Pest were officially merged with the third part, Óbuda (Old Buda), thus creating the new metropolis of Budapest. The dynamic Pest grew into
Budapest–Belgrade railway International, financed with Russian credit. The reconstruction of the section Novi Sad-Subotica is set to begin in 2019, with estimated cost of €943 million, built by a Chinese company and a duration of 33 months, during which this section will be closed. The railway line between Budapest and Belgrade was used also by the Orient Express until 1914. The Orient Express was launched on 5 June 1883. It connected Paris and Constantinople. Budapest–Belgrade railway The Budapest–Belgrade railway connects the capital cities of Hungary and Serbia – the Budapest Keleti railway station with the new Belgrade Centre railway station. As a