The United States tested its first hydrogen bomb during the Cold War at the Marshall Islands on November 1, 1952. This test, known as Ivy Mike, marked a significant escalation in nuclear weapons development. It was part of Operation Ivy and showcased the powerful capabilities of thermonuclear weapons. ;
The first hydrogen bomb test by the United States occurred at the Marshall Islands on November 1, 1952, during Operation Ivy, specifically the Ivy Mike test. This event illustrated the significant power of thermonuclear weapons and escalated the Cold War arms race. The correct answer to the multiple-choice question is D. The Marshall Islands.
;