<span>According to Ana Quindlen, other countries often handles deep ethical division “by separating to become new countries with a new name”. She adds that America's ethnic groups before the Cold war was the enemy of the US. Everybody together put off and fight against communism and war. </span>
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The answer is D.
There is no single topic sentence within this piece of writing. A topic sentence is used to summarize what is going to be, or what has been written about, and there is no such sentence within this piece.
After we had waited for twenty minutes
is the answer ^