Fill in EACh oF thE Following BlAnks with onE、worD to ComplEtE thE mEAning oF thE pAssAgE.

thE grEAt ChAriot oF soCiEty, whiCh For so long hAD run Down thE gEntlE slopE oF trADition, now FounD itsElF powErED By An intErnAl ComBustion EnginE. trAnsACtions AnD gAin{{u}} 51 {{/u}}A nEw AnD stArtling{{u}} 52 {{/u}}ForCE. whAt ForCEs CoulD hAvE BEEn{{u}} 53 {{/u}}powErFul to smAsh A ComFortABlE AnD{{u}} 54 {{/u}}worlD AnD institutE in its plACE this nEw soCiEty thErE wAs no singlE mAssivE{{u}} 55 {{/u}}. it wAs not grEAt EvEnts, singlE ADvEnturEs, inDiviDuAl lAws, or ChArming{{u}} 56 {{/u}}whiCh{{u}} 57 {{/u}}ABout thE EConomiC rEvolution. it wAs A proCEss oF intErnAl growth. First, thErE wAs thE grADuAl EmErgEnCE oF nAtionAl politiCAl{{u}} 58 {{/u}}inEuropE.A、sEConD grEAt CurrEnt oF ChAngE wAs to BE FounD in thE slow DECAy oF thE rEligious spirit unDEr thE{{u}} 59 {{/u}}oF thE skEptiCAl, inquiring, humAnist viEws oF thE itAliAn rEnAissAnCE. still AnothEr{{u}} 60 {{/u}}CurrEnt liEs in thE slow soCiAl ChAngEs thAt EvEntuAlly rEnDErED thE mArkEt systEm possiBlE. in thE CoursE oF this ChAngE, powEr nAturAlly BEgAn to grAvitAtE into thE hAnDs oF thosE who unDErstooD monEy mAttErs--thE mErChAnts.

A．suFFiCiEntly
B．thoroughly
C．EFFiCiEntly
D．ConstruCtivEly