Yaƙin Duniya na farko shine farkon yaƙi don amfani da makaman sunadarai kamar gas mai guba.
Yaƙin Duniya na a kuma san yadda yaƙin don ƙare duk yaƙe-yaƙe saboda ƙoƙarin ƙirƙirar ƙungiyar duniya don hana rikici a gaba.
A lokacin Yaƙin Duniya na II, Kasar Amurka ta kaddamar da wani aikin sirri da ake kira Manhattan aikin don haɓaka bam bama-bamai.
Adolf Hitler, shugaban Nazi, yana da karar saurayi mai suna Paula Hitler wanda ya tsira daga yakin ya mutu a shekarar 1960.
Yakin Duniya na II ya haifar da binciken da yawa, gami da kwamfutoci na zamani, roka, jiragen ruwa, da radar.
Mata suna taka muhimmiyar rawa a yaƙi, duka biyu a matsayin memba na soja da kuma masana'antar aiki don tallafawa ƙoƙarin yaƙi.
Japan ta fara harin na mamaki a kan sansanin sojan Amurka a tashar jiragen ruwan Pearl, Hawaii a ranar 7 ga Disamba, 1941, wanda ya haifar da Amurka ta shiga cikin yakin duniya na II.
Winston Churchill, Firayim Ministan Burtaniya yayin yakin duniya na, wanda aka sani da jawabai mai ban sha'awa, za mu yi yaƙi a filayen da tituna.
A lokacin yaƙin Vietnam, Amurka ta yi amfani da makaman sunadarai irin su cewa jami'an orange don kashe tsire-tsire da kuma gandun daji na Veetnas amfani.
Yaki da yaƙi ne na siyasa da rikici tsakanin Amurka da Soviet Union wanda ya faru daga karshen yakin duniya na II zuwa 1991.
