Decades: 1640s 1650s 1660s 1670s 1680s - **1690s** - 1700s 1710s 1720s 1730s 1740s

Years: 1686 1687 1688 1689 1690 - **1691** - 1692 1693 1694 1695 1696

**Events**

- Change of emperor of the Ottoman Empire from Suleiman II (1687-1691) to Ahmed II (1691-1695).
- Michel Rolle invents Rolle's theorem, an essential theorem of mathematics.

**Deaths**\n