▁groups ▁such ▁as ▁the ▁Fre ikor ps ▁and ▁left - wing ▁forces ▁as ▁they ▁fought ▁for ▁control ▁of ▁the ▁state ▁during ▁this ▁period . ▁H ess ▁was ▁a ▁particip ant ▁in ▁street ▁batt les ▁in ▁early ▁ 1 9 1 9 ▁and ▁led ▁a ▁group ▁which ▁distributed ▁thousands ▁of ▁ant is emit ic ▁pam ph lets ▁in ▁Mun ich . ▁He ▁later ▁said ▁that ▁Egypt ▁made ▁him ▁a ▁national ist , ▁the ▁war ▁made ▁him ▁a ▁social ist , ▁and ▁Mun ich ▁made ▁him ▁an ▁ant is em ite . ▁ ▁In ▁ 1 9 1 9 , ▁H ess ▁en rolled ▁in ▁the ▁University ▁of ▁Mun ich , ▁where ▁he ▁studied ▁history ▁and ▁econom ics . ▁His ▁ge opol it ics ▁professor ▁was ▁Karl ▁Haus ho fer , ▁a ▁former ▁general ▁in ▁the ▁German ▁Army ▁who ▁was ▁a ▁pro ponent ▁of ▁the ▁concept ▁of ▁Lebens raum ▁(" l iving ▁space "), ▁which ▁Haus ho fer ▁c ited ▁to ▁justify ▁the ▁proposal ▁that ▁Germany ▁should ▁force fully ▁conquer ▁additional ▁territory ▁in ▁Eastern ▁Europe . ▁H ess ▁later ▁introduced ▁this ▁concept ▁to ▁Adolf ▁Hitler , ▁and ▁it ▁became ▁one ▁of ▁the ▁pill ars ▁of ▁Naz i ▁Party ▁ide ology . ▁H ess ▁became ▁friends ▁with ▁Haus ho fer ▁and ▁his ▁son ▁Al bre cht , ▁a ▁social ▁the or ist ▁and ▁lect urer . ▁ ▁Il se ▁Pr ö hl , ▁a ▁fellow ▁student ▁at ▁the ▁university , ▁met ▁H ess ▁in ▁April ▁ 1 9 2 0 ▁when ▁they ▁by ▁chance ▁r ented