https://www.youtube.com/watch?v=Kv6VUIHp9pc

Development Mapmode in Europa Universalis 5 - EU5 Mapmode Spotlight

Unlock the power of the Development Map Mode in Europa Universalis V! This map mode lets you visualize location development across your empire, showing the level of how developed you are. Learn how development works in EU5 and the highest development regions in the game. Also see how development progresses in real EU5 gameplay footage from 1337 to the 1800s in this short.