Why do you think the framers of the counstitution were careful to limit the powers of the individual branches through checks and balances?

The framers of the constitution limited the powers through checks and balances to prevent one power dominating the country or the other powers. Also to prevent dictatorship, or a monarchy.

Ongoing civil wars western roman empire finally collapsed476 c.e. romulus, the last of theroman  emperors in  the west, was overthrown by the germanic leader odoacer, who became the first barbarian to rule in rome. the order that the  roman empire  had brought towestern  europe for 1000 years was no more.

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