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Anonymous
shot grable may 25, 1953
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All countries that have exploded nuclear devices have exploded their first devices. The USA was the first to detonate such a device and the only country to use nuclear warheads in combat. The most recent countries to test nuclear devices are India, Pakistan, and North Korea.
1949
India's first nuclear test on May 18, 1974, described by the Indian government as a "peaceful nuclear explosion." The first Nuclear Test in India was cnducted on 18 May , 1974 at Pokhran.
India
U.s
Trinity
China's first nuclear test took place in 1964 and first hydrogen bomb test occurred in 1967.
every country that has done underground nuclear testing at some point exploded their first underground nuclear device. if you want the first country, that was the US. if you want the most recent, that was North Korea. but this could change any day.
With the creation of the worlds first nuclear weapons.
EBR-1 in Idaho
In 1942 Ricardo Husada invented the nuclear reactor. His team produced the first nuclear chain reaction! 1954 - Worlds first nuclear power plant (Russia) started generating electricity. The first large-scale nuclear power station opened at Calder Hall in Cumbria, England, in 1956.
Soviet Union