What are two reasons the Roman Empire eventually collapsed?

Historians have cited many reasons -- some more rational than others.

http://www.roman-colosseum.info/roman-empire/reason-why-the-roman-empire-fell.htm

What do you think?

http://www.csun.edu/~hcfll004/fallrome.html

1. The Romans had conquered many other countries and failed to fully incorporate those individuals into their culture. The empire became too large and too culturally heterozygous to manage.

2. The Romans failed to address new military challenges and change the way they fought. They were conquered by unorganized Germanic warriors. The Romans continued to fight in organized battalions and were overrun.

The collapse of the Roman Empire was a complex process that took place over several centuries, influenced by numerous factors. Here are two significant reasons for its eventual collapse:

1. Internal Decline and Instability: Over time, the Roman Empire faced several internal challenges that weakened its foundations. These included political instability, corruption, and the constant struggle for power among various factions and emperors. The governance system became increasingly ineffective, and succession disputes led to frequent civil wars, which drained the empire's resources and undermined its stability.

To research this further and find specific examples, you can start by searching for keywords such as "political instability in the Roman Empire" or "succession disputes in Rome." Books, scholarly articles, and reputable historical websites can provide valuable insights into these internal issues.

2. External Invasions and Military Pressures: The Roman Empire faced continuous threats from external forces, including barbarian invasions, particularly in the declining western half of the empire. The empire was stretched too thin to effectively defend its borders due to limited resources, increased pressure from migrating tribes, and the gradual decline of the Roman Army. Eventually, these external pressures overwhelmed the weakened empire, leading to the disintegration of the Western Roman Empire.

For more information on specific invasions and military pressures faced by the Roman Empire, you can search for terms such as "barbarian invasions of Rome" or "decline of the Roman army." Historical accounts, academic papers, and reputable resources can provide you with detailed information and insights into these external factors.

Remember, exploring multiple sources and consulting reputable historical references will give you a comprehensive understanding of the reasons behind the collapse of the Roman Empire.