The ISAF was created by the United Nations Security Council
The nmain goal of the union blockade in the South was to was to crush the life out of the Confederacy. This was done to prevent the Confederacy from receiving supplies, therefore, demoralizing them and starving them leading to their surrender.
There were many obstacles to overcome in building the canal. The dense jungle, The elevation of the mountains, Getting the soil and rock out of the way, The difference in tides between the Pacific and the Caribbean. and diseases like Malaria and Yellow Fever. I hope this helps you out and have a good day. :)
