Why have existing states increasingly found it necessary to claim that they represent a nation?

Because national identity provides states with a widely accepted basis for political legitimacy.

The correct answer is Option 1: Because national identity provides states with a widely accepted basis for political legitimacy.

Option 1: Because national identity provides states with a widely accepted basis for political legitimacy — Correct. In the modern era, nationalism and democracy have become important sources of political legitimacy. Therefore, states increasingly claim that they represent a nation because national identity provides a widely accepted justification for their political authority.

Option 2: Because states can maintain political authority only by removing all other forms of community identity — Incorrect. States do not need to eliminate different community identities to maintain authority. Strong nation-states can exist while recognising and accommodating cultural diversity.

Option 3: Because every state naturally develops into a single cultural community with a common identity — Incorrect. States do not always represent a single cultural community. Many states include different linguistic, religious and cultural groups.

Option 4: Because nations and states have always had an identical relationship throughout history — Incorrect. The relationship between nation and state has not always been the same. Historically, a state could contain multiple nations, and a nation could exist across different states.