Examine the constitutional phraseology utilized in Article 1 and the geopolitical realities it codifies:
1. The foundational text explicitly labels the geopolitical structure of the republic as a 'Union of States' rather than a 'Federation'.
2. The structural existence of the Indian polity is the direct legal consequence of a voluntary treaty signed among formerly independent sovereign states.
3. The legal architecture explicitly denies constituent regional units any constitutional right to secede from the national apparatus.