Why do historians use evidence all the time?

"a government in which power is divided between state and national levels". federalism is a system of government in which entities such and state and province, share power with the national government.

yes

explanation:

the fighting words doctrine, in united states constitutional law, is a limitation to freedom of speech as protected by the first amendment to the united states constitution. in 1942, the u.s. supreme court established the doctrine by a 9–0 decision in chaplinsky v. new hampshire.