The Era of Good Feelings.
Ice caps over Antarctica are on average 7 000 feet thick, or around 1 mile, so 1 miles is the correct answer, and the thickest are about 2 miles thick- so that's also a correct answer.
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The three most important economists were Adam Smith, Karl Marx, and John Maynard.
Because of all the things that happened in Europe like the black death it decreased the economy
