The most accurate response among the options provided is:
In the decades after World War II, many empires granted independence to their former global colonies. This caused the birth of new countries worldwide. This process occurred peacefully in some places and violently in many places.
Decolonization after World War II led to the emergence of numerous independent nations, significantly reshaping the global political landscape. While some regions experienced relatively smooth transitions to independence, others were marked by conflict and violence as colonized peoples fought for self-determination. This wave of decolonization not only resulted in new countries but also prompted discussions around national identity, governance, and international relations within the newly independent states.