Any particular time? I guess the most relevant time for this question is early half of 20th century.
I think the event was first world war and some of its consequences (in many countries the monarchy was abolished so people "experimented" with new political organisatons, in Germany the war brought huge reparations which contributed to the deterioration of their economy)
and the global economic crisis of 1920
Acid rain is a especially a problem in cities because of the toxic waist.
Marginalism is the study of how much extra use is gained from incremental increases in the quantity of goods created, sold, or consumed.
Option: A
Explanation:
Marginalism is an important theory of economics. It is the study of quality of products for judging its power to serve extra use by increasing its number incrementally. Marginalism prevails in that condition where quantity of products slightly increase in respect of creation, selling and consumption.
Marginalism does not exist in the situation of no surplus or no shortage means in equilibrium condition. A good's capacity of giving extra service on extra use is called marginal service capacity or marginal productivity. For reaching the satisfaction level of buyers extra use of increased quantity of good is required.
The correct answer to this question is letter "c. day care center." One of the types of child care that is most closely regulated by state and county government is the <span>day care center. The day care center is under the responsibility of the state and the country - thus, it is for public benefit.</span>