The answer is "D. Determined by birth, not behavior" because it was believed that if you were high born you had great manners and were very polite.
Answer:
If your talking about the 1920s then I believe it was swing music.
Explanation:
The major events that increased polarization on the world stage from the close of world war II through 1961 had to do with the Cold War between Russia and the US--primarily proxy wars such as the Korean War.
The answer is True.- I believe