When did sumerian become significant

Beginning around 5,500 years ago

Explanation:

Sumerians became significant during the start of their civilization.

The Sumerian civilization started at around 400 B.C

This civilization started at the flood plains along the river Euphrates and Tigris.

The Sumerians build cities along rivers in the lower Mesopotamia and also advanced technologies.

They improved transport on land and also excelled in metal work.

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.

some american cities felt workers were being oppressed by business monopolies