Which nation was responsible for much of the agricultural pollution affecting the region?
1. afghanistan
2. china
3. soviet union
4. usa

Soviet Union was responsible for the pollution

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.

that would be the steamboat because none of the other things are forms of transportation