Why do you think the Founding Fathers included the ability of Congress to override a veto?

Congress to prevent the legislative branch from becoming too powerful.

in 476 c.e. romulus, the last of the roman 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 to western europe for 1000 years was no more.