
Originally Posted by
shikaka
Your empire has to pay for things (family members, builds, recruitment, upkeep, bribes, corruption).
This is a summerized amount.
This summarized amount is split among the whole population of the empire. Each city pays for these expenses based on it's population.
If there is a city, where you reduce population it's share of expenses becomes lower, as it's population (= number tax payers) are lower.
In the meantime, the rest of your cities will have to contribute more to finance the empire's expenses.