What to do first in District Enhancements?
In District enhancements You need to level-up all items in Academy first. In top level with red color have to be Research, March size vs. Encounters, Resource Income, Resource Capacity, Attack vs. Encounters and Health vs. Encounters. Then you are strong and powerful enough to fight Encounters/Camps every day to earn millions of gold. This is the trick and tactic to grow fast.