Peace of Augsburg
Whose realm, his religion

In September 1555 the Imperial Diet at Augsburg recognised Lutheranism alongside Catholicism: each prince chose the faith of his lands, and dissenting subjects could emigrate. The Calvinists were left out, and six decades later disputes over religion led to the Thirty Years' War.
Wikipedia (Russian) · Wikipedia (English) · 16th century
Meanwhile around the world (±25 years)
Eastern Europe & Russia
- 1547 Ivan IV crowned Tsar — 8 years earlier
- 1555–1561 Saint Basil's Cathedral — same year
- 1556 Russia annexes Astrakhan — 1 year later
- 1558–1583 Livonian War — 3 years later
- 1569 Union of Lublin — 14 years later
Asia
- 1556 Shaanxi earthquake — 1 year later
- 1556 Akbar and the Second Battle of Panipat — 1 year later
Americas
- 1532 Capture of Atahualpa at Cajamarca — 23 years earlier
- 1542 Orellana sails down the Amazon — 13 years earlier
- 1545–1548 Cocoliztli epidemic — 10 years earlier
Alive at the time
- Michelangelo (aged 80)
- Ivan the Terrible (aged 25)
- Elizabeth I (aged 22)
- Akbar the Great (aged 13)
- Tokugawa Ieyasu (aged 12)
- Miguel de Cervantes (aged 8)
- Bartolomé de las Casas (aged 71)
- Suleiman the Magnificent (aged 61)
- Charles V (aged 55)
- Hurrem Sultan (Roxelana) (aged 50)