Answer: It allowed him to navigate the seas using the sun and stars.
Explanation: The astrolabe enables astronomers and sailors to calculate the position of the Sun and stars with respect to the horizon and the meridian. The astrolabe can calculate the altitude and predict the position of celestial objects in time. An astrolabe is a device that uses astral bodies like the sun and stars to either tell your position in latitude or tell the local time. It can also be used to measure celestial events like the wobble of the Earth's axis. An astrolabe can tell your position in latitude or tell the local time.
The answer would be Greece (a)
I'm not very sure of the answer but i did find a timeline that might help you figure out who ruled from the 1200s to the mid 1300s.
https://web.cn.edu/kwheeler/timeline_1200.html
Answer:
check in your social textbook
