Which significant event did Diocletian become the first Roman emperor to do?
Convert to Christianity
Abdicate voluntarily
Marry a foreign queen
Declare war on Persia
Answer
Diocletian became the first Roman emperor to abdicate the position voluntarily. Weakened by illness, he left the imperial office on 1 May 305 and retired to his palace on the Dalmatian coast.
Mastering the Mighty Diocletian: A Roman Emperor's Reign Revealed