Who was one of the most famous flappers and admired by other women for living life on her own terms?

Zelda Fitzgerald was one of the most famous flappers. 

The changes to agriculture in the united states since 1900 is that increased mechanization has increased food production, thereby increasing the need for labor. there has been an increased need for higher speeds of food production due the fact that the population in the united states continues to rise.

My opinion is that it doesn't