Finish an Era with 6500 Prosperity
If you’re struggling with this challenge then you’re recommended to complete other developments first. Completing developments unlocks more resources, and more resources facilitate more ways to develop prosperity for a village.
This ask is huge. Massive. Gigantic. And unfortunately, due to the random nature of Projects, barely predictable.
With this said our advice is much the same as the 'Grand Era' Development. Ambassador farm with a mind to focus on one biome, and thus one type of resource predominantly.
If we’re breaking this down in terms of completed Grand Projects then this asks you to fully answer the desires of three villages and then support a fourth with at least a great project.
Again, Projects are random - we can’t predict those. We can tell you to focus on Food dominant aspects and abilities, collecting ambassadors to power up those abilities first. Once you’ve accomplished that, cover the world in forests (you should be about 45 mins - one hour down).
Now proceed to fill the world with food. This is the primary resource of Forest developments and your focus on upgrading those abilities will pay off. If you’re unhappy with project specializations then squash them, and remember to always replace old resources with more powerful ones as you find them.