Complex sentence: The Hindu Kush range were a historically significant center of Buddhism with sites such as the Bamiyan Buddhas, important for trade and to travelers between Central Asia and South Asia.
Split into simpler sentences: The Hindu Kush range were a historically significant center of Buddhism with sites such as the Bamiyan Buddhas. The range and communities settled in it hosted ancient monasteries, important trade networks, and travelers between Central Asia and South Asia.