The meeting at Yalta is one of the most considerable step towards change that came from ww2. Three leaders, (F.D.R, Josef Stallone, and Winston Churchill) divided up the central powers and distributed the central powers' assets among themselves and there allies. another, more positive change was the United States, through the needs drawn out from the war, dragged itself completely out of the depression. Business was again booming and the United States government received plenty of money from the war effort and the spoils from it. Also, the United States made a world changing statement that she was the world's most powerful nation.
Option C is the right answer that the Ostracism is the one way Athenians tried to safeguard their democracy before the Peloponnesian War.
Ostracism was a political method under the Athenian government, through which a citizen who endangered the security of the states could be exiled for a term of ten years by public vote.
The practice of ostracism was used when some cases clearly represented widespread anger among the citizens. One of the significant example of the democracy of Athens is that the authority of the ostracism was held in the hand of the ordinary people
The Price of an Organized Society: Conformity in the 1960s. ... Gropius was mainly concerned with conformity in architecture, but he recognized that buildings reflected society.