Which principle allows each nation the right to manage its own government and laws?

The correct principle that allows each nation the right to manage its own government and laws is national sovereignty. National sovereignty refers to the concept that each state has full control over its internal affairs without external interference. This principle is fundamental in international law and relations, as it grants nations the authority to enact laws, govern their populace, and engage in diplomatic relations as they see fit.

National sovereignty emphasizes the autonomy and independence of a state, recognizing that no other entity has the right to dictate its governance or legal framework. This is crucial for maintaining international order and respect among nations, enabling them to operate independently within the global system.

In contrast, the doctrine of sovereign immunity typically relates to the principle that a nation cannot be sued in the courts of another nation without its consent, rather than addressing the broader concept of governance. Self-determination pertains to the right of groups to determine their political status and pursue their economic, social, and cultural development, but it focuses more on peoples rather than states as individual entities. Cultural autonomy involves the capacity of a group to maintain its cultural identity and manage its cultural affairs but does not encompass the full governmental authority associated with national sovereignty.