give reason on the postal department tries to preserve the heritage and integrity of indian culture through postage stamps

Postal stamps reveal a lot of us about changing times due to the variety in the sizes of the stamps, the novelty in their subjects and colour schemes. The Postal Department issues postage stamps on a wide variety of themes like political leaders, flowers, animals, birds. It also throws light on events like the sliver, golden , diamond jubilees or centenary, bicentenary, tercentenary. The postal Department is a valuable repository of history. Thus, the postal department tries to preserve the heritage and integrity of indian culture through postage stamps