The Cold War shaped American foreign policy and political ideology, impacted the domestic economy and the presidency, and affected the personal lives of Americans creating a climate of expected conformity and normalcy. By the end of the 1950's, dissent slowly increased reaching a climax by the late 1960's.
Twelve countries were involved in WWI.
To spread the iron curtain
Pericles changed the legislation so that any free male citizen (regardless of wealth or status) could become one of the nine magistrates of Athens. As well, he changed the law so that both parents had to be Athenian citizens for the child to be considered Athenian. What this did was limit who the government of Athens represented, as Athenian citizens were a smaller population as a result of this law.