# Anna Jagiellon begins to rule (1575)

URL: https://poland-history.com/timeline/1575-anna-jagiellon-begins-to-rule
Location: Poland
Categories: ruler-change

Anna Jagiellon became King of Poland (1575–1586 (co-monarch)). Sister of Sigismund II, elected co-monarch with her husband Stephen Báthory. Within the broader Polish–Lithuanian Commonwealth period: The Commonwealth of Both Nations elected its kings and prized noble liberty and religious tolerance. It won famous victories but was weakened by wars with Sweden, Russia, the Ottomans and the Cossacks, and by political paralysis. At this point in the timeline (15 December 1575), the governing authority was Anna Jagiellon (King of Poland). Sister of Sigismund II, elected co-monarch with her husband Stephen Báthory. Anna Jagiellon begins to rule mattered because succession and legitimacy shaped alliances, institutions and the direction of state policy. The event is placed here so readers can follow it alongside changes in government, warfare, society, religion and culture across Polish history.

## Why it matters
Anna Jagiellon begins to rule mattered because succession and legitimacy shaped alliances, institutions and the direction of state policy.

Ruler at the time: [Anna Jagiellon](https://poland-history.com/rulers/anna-jagiellon)

## Sources
- [Wikipedia — Anna Jagiellon](https://en.wikipedia.org/wiki/Anna_Jagiellon)
- [Encyclopaedia Britannica topic lookup — Anna Jagiellon begins to rule](https://www.britannica.com/search?query=Anna+Jagiellon+begins+to+rule)
- [Wikipedia — Polish–Lithuanian Commonwealth (period overview)](https://en.wikipedia.org/wiki/Polish%E2%80%93Lithuanian_Commonwealth)