Question

10. Means of transport and communication are lifeline of our national economy. How?
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Answer 1

Explanation:

The means of transportation and communication are called the lifelines of a nation and its economy because they are the pre-requisites for the development of a country. ... This facilitates transportation of goods and services from production units to the demand locales

Answer 2

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History is the scientific study of the past. Events occurring before the invention of writing systems are considered prehistory. "History" is an umbrella term that relates to past events as well as the memory, discovery, collection, organization, presentation, and interpretation of information about these events.