How have the Himalayas influenced history and culture of china and india

Had the Himalayas not existed, the culture and history of China and India would be quite different mainly due to the difference in climate that would have occurred. India would not be plagued with monsoon season, which is a large part of the history and development and current culture of India. Without the Himalayas, China would be a much more arid climate, making it much less suitable for a civilization to have thrived in that location.