For the following questions, are given passage carefully and answer questions that follow.

Religions, like camel caravans, seem to avoid plain passes. Buddhism spread quickly h from Buddha's birth-place in southern Nepal across the flat Gangetic plain to Sri Lanka. But it took a millennium to reach China. I he religious belt stretched eventually to Mongolia and Japan, but in Afghanistan buddhism filled only a narrow belt that left pagans among the valleys to the east and west if Kailash and Ghor'.