Here are some milestones in the development of technology used by geographers. Put them in the order in which they appeared in history. Astrolabe
Camera
Navigational compass
Map

Correct answer is:

Map

Astrolabe

Navigational compass

Camera

Explanation:

Earliest maps that we know of were made in Ancient Greece in the 6th Century BC, while first astrolabe was made in the 2nd Century BC. Of course, later they have developed more.

First compasses were created in China in 11th Century, while modern navigational compass was created in 19th Century.

Of course, camera is a modern technology that came at the end.