The city of Rome was never conquered. What was conquered was most of the lands of the Western Roman Empire.
What happened in 455 was that Rome was sacked by the Vandals. They did not stay in order not to have to face troops which would have been gathered around Italy to deal with them.
The city of Rome was first conquered by foreign invaders in 410 AD, when the Visigoths, led by King Alaric, sacked the city. It was then again conquered in 455 AD by the Vandals, led by King Gaiseric.
Vandalism stems from the word Vandals who were members of a Germanic tribe who conquered Spain, North Africa and Rome around 455 AD. They were defeated at Carthage in 533 AD
Rome was actually destroyed on the date 455 AD
The Huns, Led by Atilla
he conquered Rome
Alaric I, King of the Visigoths conquered Rome on August 24th, 410 AD
Rome conquered Germania in the year 9 AD under the leadership of Roman general Publius Quinctilius Varus.
The Vandals were an eastern Germanic tribe that invaded and sacked Rome in 455 AD. This "senseless destruction" provided the English terms for those who damage property.
They sacked Rome in 410 AD. The Romans didn't treat them very well and kept them from building and from food. They were upset...
The term vandalism stems from the reputation imparted upon the Vandals' as the barbarians who pillaged Rome in AD 455.
Rome did not totally destroy Jerusalem, but it was in the year 70 AD that they conquered the city. They destroyed the Temple and looted the city and parts of it were burnt.
Ancient Rome was sacked four times (by the Senone Gauls in 387 BC, the Visigoths in 410 AD, the Vandals in 455 Ad and the Ostrogoths in 546 AD). Some of the times Rome was besieged, she was also sacked. When sieges of Rome were abandoned, this was due to the protection given by the city walls and good organisation of the defence of the city by its citizens or the arrival of Roman armies from elsewhere.