Culture represents the advancement of a civilization in ways that aren't scientifically or technologically oriented, and have nothing to do with day-to-day survival, or any other practical purpose (such as growing food and making things). In this respect, culture is one of the things that best defines a civilization and differentiates it from Barbarians (who also progress scientifically, for example). It is measured in Culture Points (CPs).
- It expands the borders of your empire by acting in each city you found, and
- It allows you to buy new social policies by accumulating empire-wide Culture Points (CPs). Perhaps even more importantly, when you acquire enough culture and complete five social policy trees, you may win the Cultural Victory. after getting 3 Legendary Cultures