Introduction:
Postage stamps are small pieces of paper that are used to indicate that postage has been paid for a letter or package to be delivered by mail. They are affixed to the envelope or package before it is sent to its destination. The introduction of postage stamps revolutionized the postal service by making it more efficient and reliable. The question asks about the person who introduced postage stamps in India.

Lord Dalhousie and Postage Stamps:
Lord Dalhousie was the Governor-General of India from 1848 to 1856. During his tenure, he implemented several reforms in different sectors. One of his major contributions was the introduction of postage stamps in India. The first postage stamp in India was issued on 1st July 1852. It was a half-anna stamp and featured a profile of Queen Victoria. The stamp was printed in Calcutta and was valid for postage throughout India.

Importance of Postage Stamps:
The introduction of postage stamps was a significant development in the history of the postal service. Before the introduction of postage stamps, the postal system was inefficient and unreliable. The recipient of a letter or package had to pay for the delivery, which led to delays and disputes. The introduction of postage stamps eliminated this problem by making the sender responsible for paying the postage. This made the postal service more efficient and reliable.

Conclusion:
In conclusion, Lord Dalhousie was the person who introduced postage stamps in India. This was a significant development in the history of the postal service as it made it more efficient and reliable. The first postage stamp in India was issued on 1st July 1852 and featured a profile of Queen Victoria.