Please help me answer this question <333 thank you

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.

Interest groups are protected by the first amendment guarantees of petition and what other freedom?

Did north or south korea forces advance further into the other’s territory?