Answer:
The answer is B, Vladimir Lenin took them out of WWI because of the revolution 
 
        
             
        
        
        
Answer:delegated-powers shown to requirements
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In October 1962, an American U-2 spy plane secretly photographed nuclear missile sites being built by the Soviet Union on the island of Cuba. President Kennedy did not want the Soviet Union and Cuba to know that he had discovered the missiles. He met in secret with his advisors for several days to discuss the problem.
 
        
             
        
        
        
Tet offensive was the battle that showed that the war in Vietnam was not being won as easily as it was being portrayed. It was one of the largest millitary campaigns of the Vietnam War, it started in 1968, by forces of the Viet Cong and North Vietnamese People´s army of Vietnam against the forces of the South Vietnamese Army of the Republic of Vietnam and the United States Armed Forces, and their allies. 
 This offensive was the largest military operation conducted by either side up to that point in the war. 
 The offensive had a huge impact on the U.S government and shocked the US public. Soon, the American public support declined and the US started a series of negotiations to end war. 
 
        
                    
             
        
        
        
La respuesta correcta para esta pregunta correcta es la siguiente.
A pesar de que no se incluyeron opciones o incisos para responder, podemos comentar lo siguiente.
¿Quién decide qué fuentes y voces quedarán grabadas en la conciencia colectiva como parte de la historia?
Por su puesto que no es ninguna persona en particular, aunque comúnmente se dice que "los ganadores son los que escriben la historia."
Existe un concepto entre los historiadores que se llama "la memoria colectiva" o la "conciencia colectiva." Es precisamente este concepto el que define lo que permanece en la memoria histórica de las personas después de un acontecimiento. 
Este concepto es el resultado de las memorias y recuerdos compartidos de uno o varios grupos sociales, que al final resultan ser las creencias compartidas que se quedan como el sello característico de un evento histórico en particular, y es el que trasciende al paso del tiempo.