Which of the following was a difficulty faced by the american military in the vietnam?

The American military faces many difficulties in Vietnam. For example, they had no place to stay permanently, there was sneak attacks at all time of the day meaning non stop fighting, they were not able to see their family forever, and they had difficulty receiving supplies they needed. 

South carolina was so angry about the election of lincoln that they seceded from the union on december 20, 1860. they attacked fort sumter later, on april 12, 1861.

Sponge bob ate the crab