Short answers, pulled from the story.
Boudica was a queen of the ancient British Iceni tribe who led a revolt against Roman rule in AD 60 or 61. Her forces destroyed Camulodunum, Londinium, and Verulamium, killing an estimated 70,000-80,000 people before being defeated by the Roman governor Gaius Suetonius Paulinus.
After her husband King Prasutagus died, Rome ignored his will and annexed the Iceni kingdom. According to the historian Tacitus, Boudica was flogged and her daughters were raped. Cassius Dio also cites the forcible recall of loans by the Roman financier Seneca and the confiscation of imperial gifts to the Britons by the procurator Catus Decianus.
The ancient sources disagree. Tacitus states that Boudica poisoned herself after her defeat. Cassius Dio says she fell sick and died, and was then given a lavish burial. Scholars have noted the two accounts are not mutually exclusive.
Boudica's forces destroyed three settlements: Camulodunum (modern Colchester), which had been a Roman colonia for retired soldiers; Londinium, the 20-year-old commercial settlement abandoned by the Roman governor; and Verulamium, the municipium known today as St Albans.
The English linguist Kenneth Jackson concluded that Boudica derives from the Proto-Celtic feminine adjective meaning victorious, itself from the Celtic word for victory. Both ancient historians misspelled the name; Tacitus added a second c and Dio used Buduica. These errors were copied and corrupted further by medieval scribes into the familiar form Boadicea, which first appeared in print around the 17th century.
The bronze statue known as Boadicea and Her Daughters, sculpted by Thomas Thornycroft, stands on the Victoria Embankment beside Westminster Bridge in London. Thornycroft worked on the piece from 1856 to 1871; it was cast in 1896 and positioned at its current location in 1902. Prince Albert encouraged the project and lent his horses as models.