territorial dominion

NOUN
20 LETTERS · STARTS WITH T

territorial dominion is a valid 20-letter word worth 22 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
T1E1R1R1I1T1O1R1I1A1L1D2O1M3I1N1I1O1N1
1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 2 + 1 + 3 + 1 + 1 + 1 + 1 + 1 =22 PTS
DOUBLE WORD → 44TRIPLE WORD → 66
MEANING

What does territorial dominion mean?