). ▁The ▁den om ination ▁ 1 7 0 ▁for ▁this ▁year ▁has ▁been ▁used ▁since ▁the ▁early ▁medieval ▁period , ▁when ▁the ▁An no ▁Dom ini ▁calendar ▁era ▁became ▁the ▁pre val ent ▁method ▁in ▁Europe ▁for ▁naming ▁years . ▁ ▁Events ▁ ▁By ▁place ▁ ▁Roman ▁Empire ▁▁ ▁The ▁Sue bian ▁tribes ▁of ▁the ▁Mar com anni ▁cross ▁the ▁Dan ube ▁and ▁in va de ▁northern ▁Italy . ▁The ▁Roman ▁army ▁( 2 0 , 0 0 0 ▁men ) ▁is ▁destroyed ▁near ▁Car n unt um ▁in ▁P ann onia . ▁▁ ▁The ▁Mar com anni ▁pl under ▁Op iter g ium ▁( mod ern ▁O der zo ) ▁and ▁bes ie ge ▁Aqu ile ia . ▁This ▁is ▁the ▁first ▁time ▁host ile ▁forces ▁have ▁entered ▁Italy ▁since ▁ 1 0 1 ▁BC . ▁ ▁Emperor ▁Marcus ▁A ure lius ▁writes ▁in ▁S irm ium ▁( P ann onia ) ▁his ▁first ▁of ▁ 1 2 ▁books ▁of ▁the ▁Med itations ▁in ▁Ko ine ▁Greek . ▁▁ ▁The ▁Cost ob oci ▁cross ▁the ▁Dan ube ▁( D acia ) ▁and ▁rav age ▁Th race ▁in ▁the ▁B alk an ▁Pen ins ula . ▁They ▁reach ▁Ele us ina , ▁near ▁Ath ens , ▁and ▁destroy ▁the ▁temple ▁of ▁the ▁Ele us in ian ▁Myst eries . ▁▁ ▁Marcus ▁A ure lius ▁orders ▁hum ane ▁treatment ▁for ▁Christians ▁and ▁slaves ▁throughout ▁the ▁Roman ▁Empire . ▁▁ ▁An ▁E quest rian ▁Stat ue ▁of ▁Marcus ▁A ure lius ▁is ▁ere cted