(possession of) one feudal domain and one castle; being independent (acting without compromise or assistance); establishing only one castle in each feudal domain (edict issued by the shogunate in 1615)
one-state socialism (Stalinist theory); socialism in one country
one country, two systems (Chinese policy allowing for areas such as Hong Kong to maintain their own economic and administrative systems)
stubborn person; obstinate person
one country, two systems (Chinese policy)