Nero was Roman Emperor from 54 to 68, and the last in the Julio-Claudian dynasty. Nero was adopted by his great-uncle Claudius to become his heir and successor, and succeeded to the throne in 54 following Claudius' death. Nero focused much of his attention on diplomacy, trade, and enhancing the cultural life of the Empire. Nero annexed the Bosporan Kingdom to the Empire and began the First Roman–Jewish War. In 64 AD, most of Rome was destroyed in the Great Fire of Rome, which many Romans believed Nero himself had started in order to clear land for his planned palatial complex, the Domus Aurea. Nero's rule is often associated with tyranny and extravagance. He is known for many executions, including that of his mother.