Arguments to support this statement are:
(i) Fast and efficiendy moving transport is required for traded items to reach their destinations on time, otherwise business will suffer.
(ii) Communications are vital for international trade where much advance planning is required for success! If a communication fails, it can create heavy losses in trade.
(iii) Transport is required to carry raw materials to production centres and from manufacturing hubs to markets particularly for perishable goods.
(iv) Modem communication facilities like the internet allow commercial transactions to take place over large distances including overseas transaction. They also keep buyers and sellers informed about their present and prospective markets.
Thus, it can be concluded that dense and efficient network of transport is a pre-requisite for national and international trade.