No particular document explains the decline of the Roman Empire. Historians have elaborated this notion from the writings of several Roman and Greek authors. Some historians even challenge this notion of a decline of this empire.
Era of decline upon the collapse of the roman empire is called Fall of Rome
France and england
After the height of the Roman Empire comes the decline of the Roman Empire
It probably got too big to defend its borders.
The period of disorder after the decline of the Roman Empire led to an extended period of disunity during the Middle Ages that was characterized by feudalism.
The lack of money led to their decline.
Boadicea helped with the decline of the Roman Empire.
Which led most directly to the decline of the Latin language
Edward Gibbon wrote The History of the Decline and Fall of the Roman Empire.
The spread of migration of small farmers into cities caused unemployment which led to the decline of the empire.
No particular document explains the decline of the Roman Empire. Historians have elaborated this notion from the writings of several Roman and Greek authors. Some historians even challenge this notion of a decline of this empire.
Era of decline upon the collapse of the roman empire is called Fall of Rome
If you mean The Decline and Fall of the Roman Empire, it was Edward Gibbon.
The leaders of the Roman empire during its decline were the emperors.
There is not a date for it. The decline of the empire was a gradual process, not an event.
Edward Gibbon in his Decline and Fall of the Roman Empireindicated that freakishness in the arts was a sign of decline.