The Second World War had a huge global impact and ended with the atomic bombings of Hiroshima and Nagasaki in 1945. Japan surrendered unconditionally and underwent 7 years of American occupation. The war accelerated technological developments and the use of experimental materials in design. It also increased graphic design and propaganda. Art during the war chronicled different nations' experiences and perspectives. The Holocaust resulted in the systematic murder of approximately 12.7 million people under the Nazi regime.