God, if I could choose, I would say none. All of these lead to inequality (because circumstances vary between many individuals) but I believe prestige should hold the most weight in determining social class. Prestige (which is respect, recognition, or regard) is based on many criteria, including wealth, family background, fame, leadership, power, occupation, and accomplishments. Leadership, power, and accomplishments can both be achieved by any individual with hard work. This is still an unfair balance (gender inequality, racial/ethnical inequality/racism) because of individual factors, it still leaves hope for some people to rise the social ladder.
Between 1870 and 1900, the largest number of immigrants continued to come from northern and western Europe including Great Britain, Ireland, and Scandinavia. But "new" immigrants from southern and eastern Europe were becoming one of the most important forces in American life. More controversial, and much more limited, was immigration from Asia and Latin America.
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A war between the Soviet Union and the United States and their allies. It was called the Cold War because there was no large scale fighting. The 1950s was marked by the post World War II boom. The role of people changed .
Explanation: