To be fair, Austria has a very long history reaching into the deep Medieval, with some cities even having history as Roman cities (Vienna's Roman name was Vindobona, for instance).
Since the rise of the Hapsburg dynasty, the Austrians had been a major power within Europe, and at the
peak of the dynasty's possessions, they, above the Austrian corelands, owned Spain, the Netherlands/Belgium, Slovenia, Croatia, Bohemia and Silesia (which essentially result in the current day Czech Rep., Slovakia and southwestern Poland) several parts of Germany, Austria and France, and big parts of Hungary and Romania, which essentially was about a quarter or so of Europe.

They also played a big role in European history and culture, being one of the first multi-cultural melting pots.
Granted, I was surprised at their inclusion above many other cultures, but I'm not particularly opposed to it, since they played a significant role in history.