Human history is the history of migration.
It is thought to have traveled to the new continent by land during the ice age.
On the other hand, it is not enough to explain it alone, and there are many traces of ancestors crossing the sea and aiming for a new continent.
Whether or not it was necessary, or if there was another reason, it would not be possible to finally understand it without asking the people themselves.
However, the reason is "curiosity"
I hear that many researchers think that.
From Taiwan, Yonagunijima, the westernmost part of Japan, can be seen several times a year depending on the conditions.
For humanity at the time when they arrived in Taiwan, a sea journey over 100 kilometers to Yonaguni Island would have required unimaginable difficulties and sacrifices.
If the motivation to overcome that difficulty is "curiosity for a world we have not seen yet".
Would you like to feel a little high-pitched sound?