The most accurate description of the relationship among national governments from the provided options is:
ALL NATIONAL GOVERNMENTS ARE LEGALLY EQUAL.
This statement reflects the principle of sovereignty, where each national government is recognized as having equal legal standing in the international arena, regardless of its size or power.
The other options suggest hierarchical relationships or influence that may not universally apply:
-
ALL NATIONAL GOVERNMENTS ENGAGE IN ALLIANCES WITH OTHER NATIONAL GOVERNMENTS: This is not true for all nations, as some may choose to remain neutral or non-aligned.
-
NATIONAL GOVERNMENTS OF LARGER COUNTRIES CAN TELL GOVERNMENTS OF SMALLER COUNTRIES WHAT TO DO: While larger countries may exert more influence due to their power, they do not have the legal authority to dictate actions to smaller countries.
-
NATIONAL GOVERNMENTS OF ALLIED COUNTRIES CAN TELL GOVERNMENTS OF NON-ALLIED COUNTRIES WHAT TO DO: This also implies a level of legal authority that does not exist; no government can command another unless through specific agreements or treaties, which are not universal.
Thus, the concept of legal equality among sovereign nations remains the most broadly applicable and recognized principle in international relations.