March 21, 1925 The Butler Act is signed into Law in Tennessee
The Butler Act was a 1925 Tennessee law prohibiting public school teachers from denying the Biblical account of man's origin. It was enacted as Tennessee Code Annotated Title 49 (Education) Section 1922, having been signed into law by Tennessee governor Austin Peay. The law also prevented the teaching of the evolution of man from what it referred to as lower orders of animals in place of the Biblical account.
The law was subsequently challenged in 1925 in a famous trial in Dayton, Tennessee called the Scopes trial which included a raucous confrontation between prosecution attorney and fundamentalist religious leader, William Jennings Bryan, and noted defense attorney and religious agnostic, Clarence Darrow.
http://en.wikipedia.org/wiki/Butler_Act