Ill mark brainliest

Question 1: Himalayan mountains.
Question 2: I think it is multiple rooms, floors, and courtyards.
Question 3: Western and Eastern Ghats.
Question 4: Khyber Pass.
Question 5: 40,000 to 50,000 people.
Answer:
Himalayan mountains.
I think it is multiple rooms, floors, and courtyards.
Western and Eastern Ghats.
Khyber Pass.
40000 - 50000
hope it helps