Answer:
Population.
Explanation:
The population, as the name implies, relates to the number of people in a state. The population affects the demography of a country. It is the "bedrock" of every state.
This feature of a state feels that the people (population) must politically and socially agree to have a state with good governance. Other features of a state are;
Without the population, these other features of a state will not exist.
