Why did the Great Depression keep the US from intervening in Europe?

How did the union blockade of the southern coast affect the confederacy? it forced the confederacy to build new railroads. it contributed to shortages of weapons and food. it encouraged europe to trade with the south. it halted all trade, leaving the south without supplies.

The declaration of independence gave the americans concrete reasons for the revolution

Based on source 1 which political strategy did sncc most likely support to bring about change in society?