Answer:
It cemented the knowledge that the Earth was round.
Step-by-step explanation:
Magellan voyage was known as the first voyage that circumnavigate the whole word. Prior to this voyage, people not really sure whether the earth that they're in actually have an edge. Many sailors afraid that if they travel far enough, their ships eventually going to fall to some sort of cliff. Magellan's voyage proof otherwise.
Because of this, many explorers started to gained courage to travel into unknown territories with the hope to seek fame and riches.