This book looks at how and why the Cold War developed between the USSR and the USA and their opposing ideas of communism and capitalism. It examines the legacy of the Cold War, both in terms of the bad things that came out of it, such as instability and conflicts around the world, denial of human rights to millions of people and the stockpiling of nuclear and conventional weapons, and the good things, including technological progress, advances in medical understanding and developments in art, literature and sport.