Earlier quoted context omitted.
Or did the wars actually lead to progress? A challenging question. Strife breeds strength, but stability breeds prosperity.
Industrial or technological progress, sure, but at the expense of cultural and societal progress. Tech trees are straightforward to visualize but I challenge you to think of a law tree or social norm tree as well.
IIRC the end of colonialism and thus the end of the associated oppression, is also associated with the world wars, as they left the colonial powers too exhausted to retain their overseas empires.