Wann wurde St. Pölten zur Hauptstadt von Niederösterreich?

Why this is the correct answer

For most of its history, Lower Austria was administered from Vienna, which was geographically surrounded by but not part of the state. Following a long campaign for its own distinct capital, St. Pölten was officially designated the state capital in 1986, and government institutions relocated there through the 1990s, completing the move in 1996. This made Lower Austria the last of the nine Bundesländer to have its own dedicated capital city.