世界银行-非洲在数字时代需要更多的道路吗？基础设施互补性的证据（英）-2024.3-66页

PublicDisclosureAuthorizedPolicyResearchWorkingPaper10730PublicDisclosureAuthorizedDoesAfricaNeedMoreRoadsintheDigitalAge?PublicDisclosureAuthorizedEvidenceofComplementaritiesinInfrastructureMathildeLebrandArcadyMongoueRolandPongouFanZhangPublicDisclosureAuthorizedInfrastructureChiefEconomistOfficeMarch2024PolicyResearchWorkingPaper10730Abstractbothinisolationandincombination.Thefindingsshowthatimprovingaccesstobothhaslargeandpositivecom-Thispaperinvestigateswhethertheexpansionoffastinternetplementaryeffects.Onaverage,theadditionalimpactsonnetworkscomplementsorsubstitutesforthedevelopmentemploymentfromcombiningaccesstobothtypesofinfra-ofroadstoimprovemarketaccessandcreatemoreandstructureare22percentlargerthanthesumoftheirisolatedhigher-skilledjobsinAfrica.Thepapercombinesthegeo-effects.Thefindingssuggestthatabigpushforcombinedgraphiclocationsofhouseholdsandfirmswiththelocationsinvestmentsinfastinternetandroadaccesscouldenhanceofmainroadsandoptical-fibernodesin25Sub-SaharaneconomicdevelopmentinAfricaoverall.FirmsandworkersAfricancountries.Usingthedifference-in-differencesandinurbanlocations,femaleworkers,andworkerswithhigherinstrumentalvariablesapproachesandleveragingthehis-levelsofeducationgainthemostfromthecomplementar-toryofpost-independenceroadbuildingandthetimingitiesthatemerge.ofthearrivalofsubmarineinte...