Customs and conventions are essential components of all constitutional systems. While they are most prominent in unwritten constitutions like that of the United Kingdom, they also serve to fill gaps and provide operational norms in written constitutions, such as those of the United States or India.

In political theory, rights are generally considered enforceable claims only when recognized and protected by the state or government. While society may provide moral recognition, legal validity requires the formal sanction of the sovereign authority, which establishes the framework for rights to be exercised and defended within a political community.

In classical political science, the essential elements of a state are defined as population, territory, government, and sovereignty. While industry and religion may influence the culture or economic power of a nation, they are not formal, legal requirements for the existence of a state under international law or political theory.

While constitutions vary, rigidity is often viewed as a potential drawback rather than a feature of a 'good' constitution. A constitution that is too rigid may fail to adapt to changing societal needs, leading to political stagnation or crisis. Flexibility, or the ability to amend the document through established legal processes, is generally preferred to ensure the constitution remains relevant and effective over time.

The legal theory of property posits that property rights are not inherent or natural but are defined, protected, and regulated by the state through law. In this view, property exists only because the legal system recognizes and enforces claims to ownership, making the state the ultimate source of property rights.

A rigid constitution requires complex amendment processes. Critics argue this often forces the judiciary to interpret outdated laws to meet modern needs, effectively shifting power from the elected legislature to unelected judges who exercise judicial review to adapt the law.

Optional functions, often called 'facultative' or 'civilizing' functions, are those activities a state undertakes to promote the welfare and development of its citizens, such as education, public health, and social security. While these are essential for a modern welfare state, they are distinct from 'obligatory' functions (like defense and law enforcement). Note: The provided answer key suggests these are critical for state survival, which conflicts with standard political science definitions.

Territorial asylum is the right of a sovereign state to grant refuge to individuals within its own borders. This is a clear exercise of territorial sovereignty, as the state has the exclusive authority to determine who is permitted to enter and remain within its jurisdiction, independent of other states.

While private property is often defended for providing incentives for labor and cultural development, the division of labor is a distinct economic concept. Critics often argue that the division of labor, while increasing production, can lead to the alienation of workers and social stratification. Therefore, listing it as a 'merit' of private property is conceptually debated in political economy.

Constitutionalism evolved through the works of various thinkers. Aristotle analyzed mixed constitutions, Plato theorized on the ideal state, and Marsiglio of Padua argued for secular authority and popular sovereignty in 'Defensor Pacis', all contributing to the concept of limited government.