1680s BCThe 1680s BC was a decade lasting from January 1, 1689 BC to December 31, 1680 BC.Events and trends History of [ancient Egypt|Egypt]—Start of the Second [Intermediate Period|Sixteenth Dynasty]. Egypt—Development of leavened bread.Significant people 1686 BC—Death of Hammurabi 1684 BC—Death of Érimón, Irish legend