counterfactual

mastery
UK /ˌkaʊn.tə(ɹ)ˈfæk.tʃu.əl/ US /ˌkaʊntɚˈfæktʃuəl/nounadj

card 1 of 7 · fill in the blank

Historians often use _____ to explore what might have happened if key events had turned out differently.