Question

Which fact mostly clearly shows the difficulty in defending the roman empire against invasion

Answer 1

The most clear fact showing the difficulty in defending the Roman Empire against invasion is the weakened Roman military and leadership, the misjudgment of territorial losses, and the greater barbarian threat, which all contributed to the empire's eventual fall.

Step-by-step explanation:

The fact that most clearly shows the difficulty in defending the Roman Empire against invasion is the eventual disintegration of Roman power due to a combination of factors. These factors included the under-funded and under-manned Roman armies in the west, the growing number and improved organization of barbarian groups, and the failure to effectively respond to territorial losses, indicating the decline in military efficacy and leadership.

Large-scale invasions, such as when barbarians crossed the frozen Rhine in 406 CE, further exemplify the Roman military's weakened state. Moreover, the Roman leadership didn't consider the persistent losses of territory to barbarians as pivotal, signifying a misunderstanding of the empire's declining strength. The shift in focus towards the east and away from the increasingly vulnerable western territories accelerated the disintegration, resulting in the multiple sackings of Rome and loss of western territories over the centuries.

Answer 2

The size of the empire, at its prime it comprised of 60 million people and a territory of 2 million square miles -- for comparison, the contiguous area of the US, that is, without Alaska and Hawaii is 3.1 million square miles. The Roman Empire was mostly formed by conquered peoples and terriotories, so civil wars and rebellions against a state that had became bureaucratic and demanded lots of taxes was quite common, also the size of the state permitted that the different tribes from the north, the so-called barbarians would attch from different points, so basically a gigantic state which had to deal with internal an external problems is the cause of this difficulty.