# Dual Alliance (1879)

URL: https://germany-history.com/timeline/1879-dual-alliance
Location: Vienna
Categories: main-event

On 7 October 1879 Germany and Austria-Hungary concluded a defensive alliance. Italy joined in 1882 to form the Triple Alliance. The alliance lasted until 1918.

## Why it matters
It bound Germany's fate to Austria-Hungary in World War I.

Ruler at the time: [Wilhelm I](https://germany-history.com/rulers/wilhelm-i)

## Sources
- [Wikipedia – Dual Alliance (1879)](https://en.wikipedia.org/wiki/Dual_Alliance_(1879))
- [Encyclopaedia Britannica – Dual Alliance (1879)](https://www.britannica.com/event/Austro-German-Alliance)