How did the invention of the astrolabe help Vasco da Gama make his voyage to India? A.
It allowed him to navigate the seas using the sun and stars.
B.
It allowed him to create a map to help other sailors return to Asia.
C.
It allowed him to use the winds to return from longer journeys.
D.
It allowed him to scare off anyone who would try to attack his ship.

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.

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