how are the means of transport and communication complemantry to each other ??

 Transport, trade and communication are complimentary to each other. Transport and communication provide the infrastructural basis for facilitating and conducting trade. Similarly, growth in trade also leads to creation of more infrastructure to match the volume of trade. It also creates avenues for investment in infrastructure through the revenue generated by trade. Larger trade means more transport of goods and services across long distances. Thus, means of transport like roads, railways, air, water and pipelines need to be developed to keep the wheels of economy moving. Communication is another important aspect as it allows commercial transactions to be completed across different places and time zones. It helps surmount the barriers of geography and also keeps those engaged in trade informed about their business.