For years, historians treated the causes of  World War 2 as separate from the causes of its predecessor. However, the leadups to the First  and Second World Wars are inseparably linked.

多年来，历史学家将第二次世界大战的起因与其前身的起因分开对待。然而，第一次世界大战和第二次世界大战的前奏是密不可分的。