It's for today. Map of ethnic groups in Austria-Hungary in 1867. Prussia, the Russian Empire, Kingdom of Italy, Serbia and Romania are shown along with these ethnic groups: Germans, Poles, Slovenes, Hungarians, Romanians, Italians, Czechs and Slovaks, Croats and Serbs.

What does the map indicate about the effect of nationalism in Austria-Hungary?

The many ethnic groups in Austria-Hungary could band together to create a single, powerful nation-state.
Nationalism was unlikely to appeal to the very small ethnic groups in Austria-Hungary.
Austria-Hungary was big enough to stop ethnic groups from forming nation-states.
Austria-Hungary would no longer exist if every ethnic group got its own independent territory.