Finish an Era with only one Village which has 175 Prosperity
It’s possible to complete this development using one Giant, Ocean creation aside. Through use of Blueberries and Strawberries the Forest Giant can easily create a single village with more than 200 prosperity within thirty minutes.
So start with an ocean, and then place a forest to its side. With this done attract your first nomad as per usual; place some fruit a few tiles into the forest. I recommend dropping only Blueberries to start with as this can force your village into starting with the Granary, a rather food intensive Project.
Continue to litter the ground with Blueberries and start to upgrade the 'outer' Blueberries into Strawberries. Remember to use 'Fertility Boost' and then apply the Leaf Aspect, as this makes it 'Potent' and thus more powerful, creating more resources.
Once the project is complete, grab the ambassador with your Forest Giant.
Now you can start to buff your Blueberries with Potent Fruit Aspects. This will improve your resource gain muchly. Your ground should start to look like 'Strawberry, Blueberry, Blueberry, Strawberry'.
Plant Range is an interesting thing. While plants don’t necessary spread their resources like animals, plants do buff adjacent squares in their 'plant range' with things like Natura. Natura is not a resource that villages harvest directly, but it is an attribute that can feed into the symbiosis of certain resources so it’s worth noting which plants can buff Natura.
Simply continue to spread your plants, ensuring they’re as buffed up as they can be (check if they have empty circles in the upper left of their tool tips. They shouldn’t be empty). Do this and you’ll hit 175, and then surpass it.