#OnThisDay in #history...

The USA conducted the first airborne test of an improved hydrogen bomb over Bikini Atoll in the Pacific Ocean. 🔥 It marked a significant advancement in the arms race. ☢️

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#Wars #USA #ColdWar

21.05.1956
21 May, 1956
#OnThisDay #history #OTD #Science #Technology #Wars #USA #ColdWar