Answer: COGNITION.
Explanation: Cognition is the process of thinking which is the process of knowing, of acquiring knowledge and understanding through thought and through the senses.
The ability to solve problems is an example of Cognition. For example, if the weather is too cold, we know to wear warm clothes, put on the heater and stay indoors if possible.
No i guess its planet URANUS. i guess sorry if wrong and i hope i helped.
What made it self-sufficient was whether it had enough land and serfs which could produce enough food for people to survive on the amount of food that they would produce.