The most accurate statement about the impact of decolonization worldwide after World War II is:
C. 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.
This option correctly captures the essence of decolonization, highlighting both the emergence of new nations and the range of experiences—peaceful and violent—associated with the process.