Answer:
The scientists used this information to divide the planet into 24 sections or time zones. Each time zone is 15 degrees of longitude wide. ... As you move west from Greenwich, every 15-degree section or time zone is an hour earlier than GMT, while each time zone to the east is an hour later.
Explanation:
Fossils of very old sea creatures is the answer
Geography is basically the study of the Earth/ World
This point is Libya, so the cities could be in South America for example
So we have
Mexico City
Montevideo
Brasilia
Buenos Aires
Asuncion