The necessary attributes of a state are: definite territory, population, sovereignty, and government.
Definite territory refers to a specific geographical area that a state has control over. This means that the state has the authority to enforce its laws and regulations within its territory.
Population refers to the people who reside within the state's territory. A state must have a population in order to be considered a state.
Sovereignty means that the state has the ultimate authority over its territory and its people. This means that the state has the power to make and enforce its own laws, without interference from outside powers.
Government refers to the system of rules, institutions, and individuals that make decisions and enforce laws within the state. A government is necessary to ensure that the state's laws are implemented and enforced.
Together, these four attributes form the basis of what we understand as a state. A state must have a definite territory, a population, sovereignty, and a government in order to be considered a sovereign entity in the international community.