Amajority of all state prisoners throughout the country are housed in prisons.

The medium security prisons are where most of the criminals are being housed compared to the high security prisons where they house the prisoners that are dangerous compared to those who are housed in the medium security prisons. So the answer to the statement is that, they are housed in medium security prisons.

well considering i can't see the graph, it's probably prices

imperial crisis leads to civil war.

roman forces withdraw from britain as goths attack rome.

odoacer topples romulus augustus

huns attack the empire and drive german peoples ahead of them.