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replaced http://codegolf.stackexchange.com/ with https://codegolf.stackexchange.com/

Groovy : 167 chars

Inspired by jmm's answer.

a="teen-hundreds were a time for"
b="two-thousands are a time "
s="The eigh$a rum.\nThe nine$a fun.\nThe ${b}to run\na civilized classroom."
b.size().times{println s}