Historedia
Group or institution

Austrian Empire

Events
2
Episodes
4
Years
1866

Every event in Historedia whose sources name Austrian Empire, with the role they cite and all of that event’s episodes. This is not a biography, and mentions are grouped by name, so two people with the same name can share this page.

Events and episodes

  1. Outbreak of the Austro-Prussian War

    1866

    Role: Belligerent

    1. 9 June 1866 · HolsteinPrussian Invasion of Holstein

      Prussia invaded Holstein on 9 June 1866, declaring the Gastein Convention nullified after Austrian diplomatic moves.

    2. 20 June 1866 · Kingdom of ItalyItalian Declaration of War

      The Kingdom of Italy declared war on Austria on 20 June 1866.

  2. Treaty of Vienna, 12 October 1866

    1866

    Role: Signatory

    1. 3-12 October 1866 · Signing place not attested in supplied passages; the treaty's name suggests Vienna but no passage states the locationSigning and Ratification

      The treaty was signed on 3 October 1866 and ratified on 12 October, concluding the war between Italy and Austria.

    2. 21-22 October 1866 · VenetiaPlebiscite in Venetia

      A plebiscite held on 21 and 22 October resulted in overwhelming support for joining Italy, making the annexation effective.

Sources

  1. Austro-Prussian War Wikipedia, revision of 2026-09-30
  2. Treaty of Vienna (1866) Wikipedia, revision of 2025-10-03