84

Roman Empire

 * Possible date of the ( or 84), in which  defeats the.
 * is sevir equitum Romanorum (commander of a cavalry squadron).
 * The construction of the, a line of Roman fortifications from the to the , is begun.
 * Through his election as consul for ten years and censor for life, openly subordinates the republican aspect of the state to the monarchical.
 * Domitian increases the troops' pay by one third, thus securing their loyalty.

Asia

 * Change of Jianchu era to Yuanhe era of the Chinese Eastern.