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

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.

usually, however, secession was popular enough without the of community leaders. prominent unionists, on the other hand, were a major reason that texas did not secede before march 1861. the most important of these was sam houston, the governor of the state from 1859 to 1861.

can i have brainlest

those sounds of the natural world are bioacoustics, and they're more than a false-color spectrogram of data from the musiamunat conservation area.