Did the Europeans think the world was round by the 1400s?

Answer: YES.

Explanation:

This is one of the factors why Europeans have ventured into travel and significant geographical discoveries. The fifteenth century was the period of the birth of the Renaissance and Humanism, which contributed to the development of science, cartography, technique, and all other aspects of life.

In the fifteenth century, the first scientific evidence of the movement of celestial bodies came to light as well as the birth of the idea that earth was not a flat plate.