Why was choosing sides in the war difficult

Some northerners opposed the war because they opposed using force to keep the South in the Union. The North did not like the draft law either. How did the blockade affect the southern economy? It created shortages in the South.

Economy, culture.

Explanation:

Deciding your side in the war was difficult because if you for example joined the Union you would be hated by the Southern people and if you joined the South the Union would despise of you and will likely not allow you to attend a lot of places. Another reason was future hatred and disrespect from the people you opposed.