The American teenager was not invented until the 1920s in a factory The American teenager was not invented until the 1920s The American teenager was not invented until the 1920s The American teenager was not invented until the 1920s The American teenager was not invented until the 1920s More The American teenager was not invented until the 1920s The American teenager was not invented until the 1920s The American teenager was not invented until the 1920s The American teenager was not invented until the 1920s The American teenager was not invented until the 1920s modern invention The American teenager was not invented until the 1920s The American teenager was not invented until the 1920s The American teenager was not invented until the 1920s The American teenager was not invented until the 1920s technology The American teenager was not invented until the 1920s The American teenager was not invented until the 1920s The American teenager was not invented until the 1920s technology The American teenager was not invented until the 1920s