What was one of the primary results of chinese civilizations settling in river valleys?

a-the people learned to control flooding.
b-the culture created a writing system.
c-the fertile land supported a food surplus.
d-the rulers adopted a system of divine leadership.

The 14th amendment overruled the supreme court case of dred scott vs. sandford. the landmark supreme court case determined which of the following points? a.slaves could not be citizens b.non-landowners could not be citizens c.blacks could not be citizens d.all persons born or naturalized in the united states vary differently in citizen status.

Ow does the point of view used in "battling the digital jolly roger" differ from "the completely free market" and affect the reliability of the article?

What evidence is there in this document that the policy was a good idea?