They weren't as accurate as they could be, in fact some were just based off of educated guesses.
Answer:
impact of particles from space
Explanation:
Impact of particles from space causes the erosion of rocks on the moon’s surface
After studying the maps that you posted with the question, the map that shows both the dominate air pressure over India can be found easily. So the air pressure system that forms in the summer and the direction of the surface winds around the air pressure system can be found in map number 1.