<span> Dien Bien Phu is the answer to your question</span>
Congress thought President Lincoln was being to sincere and forgiving toward the Confederate side of the US (remember that they seceded from the Union and formed their own goverment which started the American Civil War).
I am not sure what the others thought about it (for example Kahlo and Rivera were communists, so they likely believed it too!)
but a very good answer is <span>B. David Alfaro Siqueiros, since he was very opened about this view, stating it many times. </span>
C.He had fought several battles and then an armistice halted his movement.
