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• It is the only means by which we can get to places which cannot be

reached by road and railways or takes very long to do so.

• It is also very useful during the time of flood, droughts, wars and other

calamities.

Waterways

• Passenger ships carry people while cargo ships carry goods.

• Tanker ships carry oil and other petroleum products.

Communications:

• It relates to expressing thoughts, sharing ideas and exchanging

information with others.

• Post – Inland, aerogramme, telegram, courier.