He invented the first nuclear weapon, the atomic bomb.
canada
United States.
Nobody, the US was the first country to work out how to actually make nuclear weapons.
Yes, England is a nuclear weapon country. It is one of the four nuclear-armed states recognized by the Nuclear Non-Proliferation Treaty (NPT). The United Kingdom maintains a fleet of ballistic missile submarines armed with nuclear warheads, known as Trident.
The first use of plutonium was as nuclear weapon; United States was the first country to use these weapons against Japan.
The first nuclear weapon was used on Hiroshima , Japan . The first nuclear bomb test was conducted in Alamogordo, New Mexico, on July 16, 1945 .
the first nuclear weapon was issued in WW2 created by the americans in a chicargo squash court
August 6, 1945 on Hiroshima Japan by the US.
Currently, nine states possess nuclear weapons.United States - Tested its first nuclear weapon in 1945Russia - Tested its first nuclear weapon in 1949United Kingdom - Tested its first weapon in 1952France - Tested its first weapon in 1960China - Tested its first weapon in 1964India - Tested its first weapon in 1974Pakistan - Tested its first weapon in 1998Israel - Acquired weapons sometime between 1967-1971North Korea - Tested its first weapon in 2009Four states have ended their nuclear programsSouth Africa - de-nuclearized in 1991Belarus, Ukraine, and Kazakhstan - Returned nuclear weapons to Russia in mid-1990s.Nuclear Aspirants, but no nuclear program or weaponsGermany, Canada, Libya, Japan, Argentina, Syria. Sweden, Egypt, South Korea, Switzerland, Iraq, TaiwanFuture nuclear states?IranSee, Peter Beckman et. al, Nuclear Weapons, Nuclear States, and Terrorism (2007), 41.
1964
Oppenheimer did not "invent" nuclear weapons, but directed the team that developed the first nuclear weapons. Witnessing the fireball of the first test detonation in New Mexico, he is reputed to have quoted a line from the Bhagavad Gita - "Now I am become Death, the destroyer of worlds."