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 7,925 (0.5%) Jews and 3,710 (0.2%) Orthodox in Budapest. 395,964 people (22.9%) were irreligious while 585,475 people (33.9%) did not declare their religion. Budapest is a significant economic hub, classified as an Beta+ world city in the study by the Globalization and World Cities Research Network and it is the second fastest-developing urban economy in Europe as GDP per capita in the city increased by 2.4 per cent and employment by 4.7 per cent compared to the previous year in 2014. On national level, Budapest is the primate city of Hungary regarding business and economy, accounting for 39% of the