You can't see anything in a cave anyway however the main adaptations needed are touch and smell to stay alive and find food.
The route that deGama found was insanely long with the ships having to sail around Africa then turn the course and reach ASIA.moreover the sea route was very dangerous, the waters south of Africa were turbulent almost through the world.
so the Europeans were set on a new quest to find an alternate route.
HOPE IT HELPS YOU
All of the above please select the best answer from the choice provided a b c d
