What were political consequences of the dust bowl?

The primary impact area of the Dust Bowl, as it came to be known, was on the Southern Plains. The Northern Plains weren`t so badly affected, but the drought, dust, and agricultural decline were felt there as well. The agricultural devastation helped to lengthen the Great Depression, whose effects were felt worldwide
I found this on Google 
I don't think this help but here

The Northern Plains were't so badly affected, but the dust, the drought and especially the agriculture decline were there as well. The Great Depression was helped and lengthened by the agriculture devastation [the effects felt as if effected world wide.]

Aor b but i'm going with b