US History CAN Be Fun!

From my US History textbook, page 333:

"Among the longest-lived sects were the Shakers. Led by Mother Ann Lee, they began in the 1770s to set up the first of a score or so of relgious communities. The Shakers attained a membership of about six thousand in 1840, but since their monastic customs prohibited both marriage and sexual relations, they were virtually extinct by 1940."

Oh, sweet irony.