North Korea
I guess it's Pakistan.
The first implosion-style nuclear device was tested on July 16, 1945, as part of the Trinity test in New Mexico, USA. This test marked the first successful detonation of a nuclear weapon.
the USA in 1945
Every country in the world received some fallout while nuclear weapons were being tested above ground.
Both US & UK.
The US tested nuclear weapons on its own territory including the deserts of the continental southwest US.
England tested its nuclear bombs at maralinga and woomera in south Australia
No one. The first nuclear device was not tested until July of 1945, and the first bomb was not produced (not used) until later that month.
On May 28, 1998,First Pakistan became a nuclear power.
No. The Netherlands have not tested or developed nuclear weapons.
No nuclear bombs were tested on Easter Island.