They failed to work together to fight against outside threats (like barbarian invasions) and often competed for resources (money and political power)

Section 5. Ineffective and inconsistent leadership

The Latin speaking Western Empire and the Greek-speaking Eastern Empire

Section 6. Huns invade from each. Push Germanic tribes into Roman Empire. Romans treat them cruelly. They rebel and eventually kill Eastern Roman Emperor Valens

Section 2. Constant wars and overspending

Nearly 500 years

It stretched from the Atlantic Ocean all the way to the Euphrates River in the Middle East

Rome's commercial and agricultural production

A "string of military losses". Essentially, the kingdom was invaded by other tribes, known as 'barbarians' to the Romans.

The Roman Senate was ineffective and Roman Emperors were often corrupt, power-hungry, or cruel, leading to many of them being assassinated

Section 4

1. Communicating quickly was next to impossible. 2. Not enough troops to defend the frontiers 3. Not enough money for important things/ too much spent on army