Why are secondary sources important to the study of history

In his speech how does kennedy build his claim that the united states will defend freedom in its hour of maximum emergency? a.by arguing that the u.s. must enforce international law across the world since the united states is the lone superpower in the worldb.by demonstrating that the poverty which many people suffer from is an obstacle to true freedom  c.by stating that the u.s. will play an active role in fighting groups that are opposed to freedom, and by supporting groups that are fighting for freedom  d.by demanding that the adversaries of the united states be more willing to negotiate, or else there will be war

Fascism's stress on the greatness of the nation may have appealed to germans who were struggling with high inflation o anxious to recover from the devastation of war angry and humiliated by the harsh treatment germany received after world war i done

The loss of two major sources of income crippled the french economy right before the onset of the great depression what were they? wine industry foreign tourism wool manufacturing war reparations