What impact did the Plessy v. Ferguson case have on schools in the United
States?

A. Schools required teachers to have college degrees.

B. Schools promoted religious beliefs.

C. Schools began to use interactive white boards.

D. Schools were racially segregated.

D. Schools were racially segregated.

Explanation:

answer; i believe that the correct answer is ( rivers);

every society, in order to meet the needs of it's people, has to answer three basic questions:

- what should we produce?

- how should we produce it?

- for whom should we produce it?

this questions must be answered in order to, option b, aid in production decisions.

every country can't produce everything, no matter how rich their land is. it may be a matter of technology, resources or geographical conditions. so, these three questions must be resolved in order to get the most of the production of each land.

hope this !