The Cuban Missiles Crisis

After reading about the Cuban Missiles Crisis, we had to do a task, which involved three questions. In the first one, we should produce a mindmap including the causes of the crisis. In the second one, we should create a Venn diagram comparing how resopnsible Cuba, Usa and the Ussr were for the start of the crisis. In the third one, usinf the diagram, we should answer which country is most responsible for the crisis. This is my work: