The Romans stopped the Celts from fighting each other and from giving human sacrifices after spring planting to ensure a good harvest.Wow... what a white person attitude.
The Romans conducted outright genocide on the Celts, it's nothing to be proud of.
Have you taken a drive through an American city lately, you want to talk about "Decay". Or a Rural area?
Parts of cities are in decay. Parts are thriving. The difference depends on the kind of people who live there.