▁public ▁was ▁already ▁used ▁to ▁the ▁idea ▁of ▁political ▁b rib es , ▁which ▁were ▁even ▁allowed ▁as ▁a ▁tax ▁reduction ▁under ▁the ▁eu ph em ism ▁“ usage ▁unknown ▁money ” ▁( sh it of ume ik in ), ▁there ▁was ▁a ▁common ▁accept ance ▁that ▁those ▁involved ▁should ▁not ▁be ▁“ to o ▁gre edy .” ▁The ▁revel ations ▁in ▁this ▁case ▁exceed ed ▁public ▁toler ance . ▁ ▁Econom ic ▁dow nt urn ▁ ▁The ▁L DP ▁could ▁maintain ▁support ▁thanks ▁to ▁the ▁party ' s ▁successful ▁management ▁of ▁economic ▁development . ▁However , ▁“ b ubble ▁economy ” ▁resulted ▁in ▁a ▁call ▁for ▁political ▁change . ▁ ▁B ubble ▁economy ▁is ▁the ▁ab normal ▁rise ▁in ▁share ▁values ▁and ▁land ▁prices ▁after ▁the ▁Pla za ▁Acc ord ▁of ▁September ▁ 2 2 , ▁ 1 9 8 5 ▁produced ▁a ▁dram atic ▁appreci ation ▁of ▁the ▁y en . ▁This , ▁in ▁turn , ▁triggered ▁a ▁rapid ▁growth ▁in ▁capital ▁invest ment ▁and ▁consumption , ▁and ▁asset ▁prices ▁sky ro cket ed ▁as ▁a ▁result . ▁When ▁the ▁government ▁tight ened ▁mon et ary ▁policy ▁to ▁counter ▁these ▁effects , ▁share ▁values ▁and ▁land ▁prices ▁fell . ▁Con sequently , ▁financial ▁institutions , ▁especially ▁se cur ities ▁companies , ▁suffered ▁losses . ▁Since ▁ 1 9 9 1 , ▁Japanese ▁economy ▁had ▁been ▁struggling ▁to ▁adjust ▁to ▁the ▁government ' s ▁liberal ization ▁measures , ▁and ▁recovery ▁was ▁still ▁way ▁off . ▁ ▁Camp aign ▁ ▁During ▁the ▁two