Mention two things that are

(i) clear from the height.

(ii) not clear from the height.

(i) From the height, it was clear why the country had cities where the rivers ran and why the valleys were populated. It was also clear that the earth was round and that it had more sea than land.

(ii) From the height, it was not clear why the men on the earth found reasons to hate each other. It was also not understandable why men had to build walls across cities and why they had to kill.