The "separate but equal" doctrine was established when the U. S. Supreme Court ruled in the case of .

Plessy v. Ferguson

Explanation:

Plessy v. Ferguson is a legal case in May 18, 1896 in which the U.S. Supreme Court put forward the “separate but equal” that questioned and consequently assessed the constitutionality of racial segregation laws. This case Plessy v. Ferguson assessed the Fourteenth Amendment(1868) equal protection clause that made state laws denying equal protection for black people and white people. It consequently sanctioned all laws that promoted racial segregation by way of unequal treatment of black and white people such as use of separate facilities.

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 !