[单选题]根据下面资料，回答题
GermanPrimeMinisterOttoVonBismarckmaybemostfamousforhis11anddiplomatictalent,buthiscontributionstothesocietyincludemanyoftoday′ssocialinsuranceprograms.Duringthemiddleofthe19thcentury,Germany,alongwithotherEuropeannations,12anunusualoutbreakofworkplacedeathsandaccidentsasaresultofgrowing13.MotivatedinpartbyChristiansympathyforthehelplessaswellasapracticalpoliticalimpulsetogetthecreatedofthesocialistlabormovement,Bismarck14theworld′sfirstworker′scompensationlawin1884.
By1908,theUnitedStateswasthe15industrialnationintheworldthatlackedworkers′compensationinsurance.American′sinjuredworkerscouldseekcompensationinacourtoflaw,buttheystillfacedanumberoftoughlegalbarriers.16,employeeshadtoprovethattheirinjuriesdirectly17employer′slackofcareandtheythemselveswereignorantaboutpotentialdangerintheworkplace.Thefirststateworkers′compensationlawinthiscountrypassedin1911,andtheprogramsoon18throughoutthenation.
AfterWorldWarII,benefitpaymentstoAmericanworkersdidnot19thecostofliving.Infact,realbenefitlevelswerelowerinthe1970sthantheywereinthe1940s,andinmoststatesthemaximumbenefitwasbelowthepovertylevelforafamilyoffour.In1970,PresidentRichardNixonsetupanationalcommissiontostudytheproblemsofworkers′compensation.Twoyearslater,thecommissionissued19keyrecommendations,20onethatcalledforincreasingcompensationbenefitlevelsto100percentofthestates′averageweeklywages.