Since World War II, the United States has often been placed No. 1 in world rankings of various kinds. With the fall of the Soviet Union in 1991, the United States was often referred to as the sole remaining superpower. As the twenty-first century proceeds

Get a verified expert to help you with Since World War II, the United States has often been placed No. 1 in world rankings of various kinds. With the fall of the Soviet Union in 1991, the United States was often referred to as the sole remaining superpower. As the twenty-first century proceeds