The new deal set two policies that promised

To bring about immediate economic relief and reforms in industry, ag, finance waterpower, labor, and housing.

To increase trade through tariff protection  and to give relief to labor and to agricultural groups

just need the points

explanation:

nothing certain is known about what happened, but it seems that the country declined gradually, perhaps due to bad government, or, more likely, due to a series of bad harvests, which resulted in widespread and recurrent famine.