Communicationandtransportationnetworksbringpeopletogeth...
問題詳情：Communicationandtransportationnetworksbringpeoplesometimespeoplethemselvescreatesomecountries,lawsstoppeoplefrom_61_(move)freelyfromplacetoplace.Inthepast,manygroupsofpeopleweredeniedthe_62_(f...