thalassocracy noun.
[Ɵalǝ'sɒkrǝsi] M19.[Greek thalassokratia, from thalassa sea: see -CRACY.]A nation's mastery at sea; a nation's sovereignty of large areas of the sea; a maritime empire.
Times Literary Supplement What about the..Cretan thalassocracy, whose catastrophic demise is..incontrovertible? [TahlilGaran] English Dictionary ▲