How did the US coastline provide an advantage for the South during the Civil War?

Southerners enjoyed the initial advantage of morale: The South was fighting to maintain its way of life, whereas the North was fighting to maintain a union. Slavery did not become a moral cause of the Union effort until Lincoln announced the Emancipation Proclamation in 1863.

Explanation:

none needed!

It made it difficult for the Union to create blockades.

the french attack on germany was caused by the military alliance

answer; /// slavery should be outlawed in the new country, was part of the initial draft of the declaration of independence, but not part of the final