Answer:
The Astro label helped Vasco da Gama to navigate the seas using the sun and stars.
Explanation:
Vasco used the astrolabe to localize the stars, watch their movement and figure out the time using the latitude and to find the latitude by using the hour. It was helpful to him because he started a trip to an unknown land, so he needed to combine it with a map to figure out his position on the map. That helped him find his location in unknown lands, create a navigation plan and discover new ways to travel. The Astro label was a fundamental tool that showed his value among sailors. That way he found out his position every time he needed it and reach his goal. In that time, traveling in unknown seas was a very dangerous thing.
