Please enjoy a new "Fun with Flags" episode as today's Free-for-All Friday challenge at the mentalfloss.com Brain Game. Good luck!

For most of the 20th century (until 1971),
which U.S. state joined Oregon as the only ones
whose flag was different on each side?

Here is the ANSWER.

ANSWER:  MASSACHUSETTS.

See:  http://en.wikipedia.org/wiki/Flag_of_Massachusetts

Thanks for playing, and have a great weekend.