The answer is: C
The Yellow river, or Huang He as it is known in China, is considered by many scholars and historians as the place of birth of ancient chinese civilizations, since it provided its inhabitants with a plentiful source of fertile soil and water for irrigation.
Throughout the centuries these ancient civilizations have also found other uses for the river such as transportation and defense.
As such the Yellow River throughout the many decades has found itself in the epicenter of many political, economical and cultural events.
