▁which ▁he ▁participated . ▁ ▁Exp uls ions ▁of ▁the ▁left ▁wing ▁of ▁the ▁K PD ▁followed ▁in ▁ 1 9 2 7 , ▁but ▁Ros enberg ▁was ▁not ▁himself ▁one ▁of ▁those ▁subject ▁to ▁such ▁treatment . ▁Nevertheless , ▁he ▁quit ▁the ▁K PD ▁in ▁April ▁ 1 9 2 7 , ▁moving ▁from ▁the ▁political ▁real m ▁to ▁the ▁field ▁of ▁scholar ship . ▁He ▁taught ▁at ▁the ▁University ▁of ▁Berlin ▁and ▁served ▁as ▁the ▁head ▁of ▁an ▁organization ▁called ▁the ▁League ▁of ▁Rights ▁of ▁Man . ▁ ▁Years ▁of ▁ex ile ▁ ▁When ▁the ▁Naz i ▁Party ▁came ▁to ▁power ▁in ▁ 1 9 3 3 ▁Ros enberg ▁was ▁dismiss ed ▁from ▁his ▁university ▁post ▁due ▁to ▁his ▁Jewish ▁eth nic ity . ▁Ros enberg ▁em igr ated ▁first ▁to ▁Switzerland ▁before ▁moving ▁on ▁to ▁the ▁United ▁Kingdom . ▁ ▁From ▁ 1 9 3 4 ▁to ▁ 1 9 3 7 ▁Ros enberg ▁taught ▁history ▁at ▁the ▁University ▁of ▁Liverpool . ▁He ▁proceeded ▁to ▁the ▁United ▁States ▁in ▁ 1 9 3 7 ▁to ▁take ▁a ▁professor ship ▁at ▁Brook lyn ▁College , ▁where ▁he ▁taught ▁and ▁wrote ▁until ▁the ▁end ▁of ▁his ▁life . ▁ ▁Death ▁and ▁legacy ▁ ▁Arthur ▁Ros enberg ▁died ▁ 7 ▁February ▁ 1 9 4 3 ▁in ▁New ▁York ▁City . ▁ ▁In ▁the ▁ 1 9 6 0 s , ▁his ▁books ▁came ▁to ▁more ▁w ides p read ▁attention ▁among ▁German ▁histor ians . ▁ ▁Foot notes ▁ ▁Works ▁▁ ▁Imperial