different types of documents used in international trade: certificate of origin, bill of lading, air waybill and documentary credit (letters of credit)
different types of documents used in home trade: enquiry, quotation, order, invoice, delivery note, credit note, statement of account and receipt
the challenges of international trade to exporters and importers: distance, language, methods of payment, documentation, transport, customs duties, non-payment, currencies, foreign exchange rates, competition and different legal systems