Caliphate

Quran says !

“And Remember when your lord said to the angels! Verily I am going to appoint a vicegerent in the earth”.

This clearly implies that man is only a vicegerent, and , in his own right he, does not possess sovereignty, and so, sovereignty belongs to God, and God only. 

The appropriate term would be absolute sovereignty, which belongs to God only.

On another place, Quran says!

“O, David! Verily we have made you a vicegerent in the earth.”

Almighty has further said!

“Allah has promised those among you who believe and do righteous good deeds that he will certainly grant them Caliphate in land.”

Therefore, man is a vicegerent and absolute sovereignty belongs to God only.