n – bomb

Starting with scientific breakthroughs made during the 1930s, the United States, the United Kingdom and Canada collaborated during World War II in what was called the Manhattan Project to counter the suspected Nazi German atomic bomb project. Nuclear engineering was born in the 20th century with the announcement in 1939 of the discovery of nuclear fission by the German chemists Otto Hahn and Fritz Strassmann. The United States successfully tested their first nuclear device on July 1945  and The Soviets Union in August 1949

In 2019, there are nine countries that currently possess nuclear weapons:

  • 6,850 nuclear warheads – Russia
  • 6,185 nuclear warheads – The United States of America
  • 300 nuclear warheads – France
  • 280 nuclear warheads – China
  • 215 nuclear warheads – The United Kingdom
  • 145 nuclear warheads – Pakistan
  • 135 nuclear warheads – India
  • 80 nuclear warheads – Israel
  • 15 nuclear warheads – North Korea

IAEA, wikipedia, www.worldpopulationreview.com

Operation Hardtack I – Enewetak Lagoon June 28 1958

Operation Crossroads – a nuclear weapon test by the United States military at Bikini Atoll 25 July 1946