The 1925 trial of John Scopes reflects the conflict between

Traditional and modern values in America of the 1920's.

Explanation:

In 1925, John Scopes was convicted and fined $100 for teaching evolution in his Dayton, Tenn., classroom. The first highly publicized trial concerning the teaching of evolution, the Scopes trial also represents a dramatic clash between traditional and modern values in America of the 1920's.