▁full ▁calendar ) ▁of ▁the ▁Julian ▁calendar . ▁At ▁the ▁time , ▁it ▁was ▁known ▁as ▁the ▁Year ▁of ▁the ▁Cons ul ship ▁of ▁Mem mi us ▁without ▁colle ague ▁( or , ▁less ▁frequently , ▁year ▁ 1 2 3 8 ▁Ab ▁ur be ▁cond ita ). ▁The ▁den om ination ▁ 4 8 5 ▁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 ▁▁ ▁Britann ia ▁▁ ▁A elle ▁of ▁Sus sex , ▁king ▁of ▁the ▁South ▁Sax ons , ▁f ights ▁the ▁Brit ons ▁at ▁the ▁stream ▁of ▁Mer cre des bur ne . ▁The ▁battle ▁ends ▁in ▁a ▁draw ▁( acc ording ▁to ▁the ▁Ang lo - S ax on ▁Chron icle ). ▁ ▁Period ▁of ▁Arthur ' s ▁" tw elve ▁batt les ", ▁during ▁which ▁he ▁g ains ▁reputation ▁for ▁inv inci b ility ▁( appro xim ate ▁date ). ▁▁ ▁Asia ▁▁ ▁Emperor ▁X iao ▁W en ▁Di ▁instit utes ▁an ▁" equal - field " ▁system ▁of ▁agricult ure , ▁assigning ▁each ▁pe asant ▁family ▁about ▁ 1 9 ▁acres ▁( 1 4 0 ▁mu ) ▁of ▁land , ▁of ▁which ▁a ▁small ▁portion ▁is ▁to ▁be ▁kept ▁perman ently ▁by ▁the ▁far mer ▁and ▁his ▁family , ▁with ▁the ▁rest ▁rever ting ▁to ▁the ▁state ▁upon ▁his ▁death ▁or ▁ret irement . ▁To ▁make ▁sure ▁that