Vienna is the capital of the Republic of Austria and one of the nine states of Austria. Vienna is Austria's primary city, with a population of about 1.7 million , and is by far the largest city in Austria, as well as its cultural, economic, and political center. It is the 10th largest city by population in the European Union.
Vienna was one of the capitals of the Austro-Hungarian Empire. The stock market crash of 1929 began in Vienna and quickly spread to much of the industrialized world in the early 1930s, contributing the rise of revanchist governments in the Entente nations.