The Great Depression occurred around August 1929 and lasted till around March 1933.
It was a period in which all the nations including the wealthy and the poor had ugly experiences in terms of economic sustenance and financial capability.
Asides from the downward spiral in individual income, tax revenue, profits, and prices of commodities and services, the nation's limited foreign trade went down by about 50%.
After doing the ressearch about Johnson's actions, the one that surely brought a huge impact on reconstrution was that he granted amnesty to former Confederate soldiers.