math ▁of ▁World ▁War ▁I ▁which ▁led ▁to ▁the ▁foundation ▁of ▁the ▁short - l ived ▁First ▁Hung arian ▁People ' s ▁Republic . ▁ ▁The ▁revolution ▁received ▁its ▁name ▁because ▁the ▁citizens ▁and ▁dem obil ized ▁soldiers ▁in ▁Budapest ▁began ▁placing ▁the ▁a ster ▁flowers ▁( ő sz ir ó z sa : ▁literally ▁aut umn ▁= ▁ő sz ▁and ▁rose ▁= ▁r ó z sa ) ▁in ▁their ▁h ats ▁and ▁caps ▁to ▁symbol ize ▁support ▁for ▁the ▁social ▁dem ocr atic ▁Hung arian ▁National ▁Council ▁( H NC ) ▁and ▁Count ▁K á ro ly i . ▁ ▁K á ro ly i ▁had ▁helped ▁establish ▁the ▁Hung arian ▁National ▁Council ▁which ▁demanded ▁the ▁se cess ion ▁of ▁Hung ary ▁from ▁the ▁Aust ro - H ung arian ▁Empire . ▁In ▁the ▁early ▁morning ▁hours ▁of ▁ 3 1 ▁October ▁ 1 9 1 8 , ▁with ▁support ▁of ▁the ▁soldiers ▁from ▁the ▁Hung arian ▁Army , ▁H NC ▁protest ers ▁we aring ▁ast ers ▁helped ▁se ize ▁public ▁buildings ▁throughout ▁Budapest . ▁Prime ▁Minister ▁S ánd or ▁We ker le ▁res igned ▁and ▁former ▁Prime ▁Minister ▁Ist ván ▁T is za ▁was ▁murder ed . ▁ ▁By ▁the ▁end ▁of ▁the ▁day , ▁King ▁Charles ▁IV ▁was ▁forced ▁to ▁accept ▁the ▁coup ▁and ▁K á ro ly i ▁became ▁Hung ary ' s ▁new ▁Prime ▁Minister . ▁K á ro ly i ▁then ▁terminated ▁the ▁Comp rom ise ▁of ▁ 1 8 6 7 , ▁thus ▁formally ▁dissol ving