Unit Oneinternational businessexports/importsexporter/importerpatentstrademarkscopyrightsinternational tradetransportation tourismbanking advertisingconstruction retailing/wholesalinginsuranceeducation mass communication specializationabsolute advantage comparative advantageinput/outputopportunity cost opportunity cost ratiosexchange rateoperating costsbank credit agreementsclearing arrangementstrade in goodstrade in servicesvisible goods
