ANSWER
Iyan po ang nakita ko
sorry nalang po kung mali
All of those things refer to “c” a cultural background.
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