In the 15th century power was at last concentrated in the Baglioni family, who, though they had no legal position, defied all other authority.
They fortified their houses, retained their military habits, defied the consuls, and carried on feuds in the streets and squares.
It then became a formidable nest of pirates and a great slave mart; it defied all the efforts of the Byzantine sovereigns to recover it till the year 960, when it was reconquered by Nicephorus Phocas.
When the Mogul Empire absorbed the Bijapur kingdom he defied the emperor.
The Tea Act of 1773 was defied by the emptying into the harbour of three cargoes of tea on the 16th of December 1773, by a party of citizens disguised as Indians, after the people in town-meeting had exhausted every effort, through a period of weeks, to procure the return of the tea-ships to England.