How do the mountains affect the way people travel between Pakistan and
Afghanistan, and between Pakistan and
China?

I will make him/her the Brainliest.

In the coustoms hall at tashkurgan, the last town on the road from china's xinjiang province into pakistan, I felt a by-now familiar sense of trepidation. The karakoram highway, also known as the friendship highway in china, was built by the government of pakistan and china. It was started in 1959 and public in 1979. The china-pakistan border is 592 kilometre (368mi) and runs west-east from the disputed tripoint with afghanistan to the disputed tripoint with india in the vicitrity of the siachen glacien.