Answer:
(a) The
means of transportation and communication are called the lifelines of a nation
and its economy because
(i) An efficient and well
developed system of transport is essential for proper utilisation of the available
natural resources.
(ii) The means of transportation and communication are the
very basis of industry and trade of any nation.
(iii) A well developed system of transportation
maintains the movement of persons and goods from one to
another region of the country.
(iv) The means of communication help in sending and
receiving messages, thus playing a vital role in the running of the country
efficiendy.
(b) International trade has undergone major changes during
the last 15 years. Exchange of commodities and goods has been augmented and
even superseded by exchange of information and knowledge due to developments in
the field of telecommunications.
India has emerged as a software giant at the international
level and is earning a large amount of foreign exchange through the export of
information technology products.
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