What does Civilization Revolution mean by Have 3 Population in 3 Cities?

What does Civilization Revolution mean by Have 3 Population in 3 Cities? - Distant ancient stone buildings of aged town with wall of medieval fort in India

I play Civilization Revolution 2 on my iPad. I have encountered the bonus goal option "Have 3 population in 3 cities" a few times, but I've never been able to achieve it. At least, I think I've had 3 population in 3 cities many times, but the game doesn't count it.

screenshot showing the goal of Have 3 Population in 3 Cities, but with 0/3 acknowledged screenshot showing Paris with 3 population screenshot showing Besancon with 3 population screenshot showing Lyons with 3 population

What are the actual requirements for meeting this goal? What am I doing wrong?






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What does Civilization Revolution mean by Have 3 Population in 3 Cities? - Person in jester mask in city
What does Civilization Revolution mean by Have 3 Population in 3 Cities? - Exterior of Matthias Church with ornamental windows and colorful roof on street in sunny day
What does Civilization Revolution mean by Have 3 Population in 3 Cities? - Free stock photo of austerity, battle, corruptness





Civilization Revolution - The Art of the Walk-in




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Images: Narassima M S, Andrea Piacquadio, Maria Orlova, Jo Kassis