Name the North American sports teams that had prolonged runs of success in the given years. For this quiz, I am defining a "dynasty" as winning at least 3 championships over a relatively short span of time (the more championships, the longer the "short" span can be).
Not intended to be a comprehensive list.
Some teams have had multiple "dynasties," but I'm only including one per team here.
Obviously, the definition of "sports dynasty" is highly debatable. If you feel a team has been included/excluded unfairly, I welcome discussion in the comments.
I basically stayed away from NCAA football before 1950 completely, as the idea of a national champion back then was pretty nutty. For instance, for the 1921 season, six different teams have retroactively been declared champion by the various different reporting services.
Also, I only considered those teams designated by the NCAA as "consensus national champions," which are those teams picked as champion by at least one of the following: Associated Press, United Press/UPI, Football Writers Association of America, National Football Foundation / College Football Hall of Fame, and USA Today.