From History Online
by Frank E. Smitha.
The Julio-Claudians
Tiberius, Caligula, Claudius, Nero, Christians and the Great Fire.

Golden Age to Political Chaos
Good and bad emperors.
Power to the military. Rome swallowed by its empire.

Economic Decline
The depopulation of cities. Christian martyrdoms of the 200s. Neoplatonism.
The emperor Diocletian.

The Fall of Rome
Constantine and Bishop Eusibius. Christian infighting. Germanic invasions.