Which city became the cultural center of the hellenistic civilization?
alexandria
athens
babylon
byzantium

The correct answer should be Alexandria

Explanation:

There was even the famous library of Alexandria that was unfortunately burned to the ground.

An astrolabe is an elaborate inclinometer, historically used by astronomers and navigators, to measure the inclined position in the sky of a celestial body, day or night. It can thus be used to identify stars or planets, to determine local latitude given local time and vice versa, to survey, or to triangulate.