Who was the american philosopher who authored a textbook in 1890

your answer should be c, it seems to be the only one that makes sense. mark me branliest : )

the structure of state governments are determined by. "state constitutins'

under the us constitution, all state governments are.'republics'

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.