12)The most important document in a documentary sales transaction is the a. letter of credit b bill of lading c commercial invoice d certificate of origin 13.Adocument enables payment in a documentary sales transaction? al lerter of credit b bill of lading 14. A nables a firm with a specific type of expertise to sell that expertise to a customer who lacks in a strategic alliance b. management contract e.wholly owned subsidiary (dh tumkey project e. commercial invoice d. certificate of origin The adjustment of value adding activities to fit local needs reflects astrategy a global b. intemational c. product