During the 1920s there was a permanent decline in the price of what?

Labor Militancy, Recession, and Recovery. The Roaring '20s actually began with an economic whimper—the transition back to peacetime after World War I was a difficult adjustment. Labor unions, which had grown strong during the war, fought to maintain their power through a series of strikes in 1919.

Explanation:

you can't, there's no way sorry