sovereignty
US /ˈsɑːv.rən.i/
UK /ˈsɑːv.rən.i/

1.
supreme power or authority
:
•
The nation declared its sovereignty after years of colonial rule.
•
The king exercised his full sovereignty over the kingdom.
2.
a self-governing state
:
•
The newly formed nation sought recognition as a sovereignty.
•
Each sovereignty has its own laws and governance.