Sentence:  When the government, or those who acted under them, contracted with a merchant for a remittance to some foreign country, he would naturally endeavour to pay his <WSD>foreign correspondent</WSD>, upon whom he granted a bill, by sending abroad rather commodities than gold and silver. 
Meaning of the word marked with <WSD> tags:  A clerical employee responsible for communicating with an organization's stakeholders in other countries and for processing transactions involving them; a firm employed by an organization to assume such responsibilities.