Why did the Tudors start to think the world was round?

The Tudors began to believe the world was round due to a combination of renewed interest in classical texts, advancements in navigation, and exploration. Influential figures like Christopher Columbus and later explorers challenged the prevailing flat Earth belief by successfully undertaking voyages that demonstrated the globe's curvature. The invention of the printing press also facilitated the spread of new ideas and knowledge, further promoting the concept of a spherical Earth. This shift in understanding was pivotal for navigation and trade during the Age of Exploration.