Created for a 10th grade World History class, this resource can be used in classes as low as 6th grade and as high as 12th grade. It can also be utilized in both European and United States history classes. This lesson will take your students through solving the mystery: "Who caused the Cold War, the USA or the Soviet Union?" This resource includes a full length PowerPoint, a Student Packet, and additional directions so you just need to print and go! A fuller description is provided within the resource itself!