Form
Centuries, lived one month at a time.
Civilizations in Living Worlds
Civilizations rise, trade, borrow from each other and change over centuries. In a world they are made of lives: households, cities, crafts and beliefs carried from one generation to the next, so the long arc is something that happened to people.
Each passes on what it knew, made and believed.
Trade routes, languages and ideas moving between peoples.
Civilizations of the same age, in one world at once.