Answer: austro

AnswerCrossword Clue
AUSTRO

Southern (prefix)

AUSTRO

...-Prussian War, 1866

AUSTRO

..-Hungarian Empire

AUSTRO
South: Prefix
AUSTRO
...-Hungarian
AUSTRO...-Prussian War: 1866
AUSTROThe ...-Prussian War (1866 conflict)
AUSTRO...-Hungarian Empire
AUSTRO..-Prussian War