Answer:
To protect the integrity of the political system from outside threats.
Explanation:
Political institutions refer to the entities of the government that establish, implement, and apply laws within a country. These institutions also contribute to mediating disputes, render economic and social policies. The three main functions of a political institution includes:
a) To preserve a state in which society can always be in peace and harmony.
b) Maintaining social integration by establishing standards or norms.
c) Protect the country from external threats.