The Himalayas have helped in shaping the history of India as it forms a natural barrier between India and Central Asia. They have protected India against many invasions. The passes in these mountains have allowed merchants, traders, scholars, soldiers and explorers to come to India. They have contributed to the history of the country. These people brought different ideas, traditions and customs to India and enriched its culture as well as shaped its history. The geographical barrier of Himalayas has also an impact on India's climate and have significantly made an impact on the historical processes here.