Which river valley was significant for the spread of Asian farming by 3500 BC?

The Yellow River Valley is recognized as significant for the spread of Asian farming by around 3500 BC due to its role in the development of early agricultural societies. This region is often referred to as the cradle of Chinese civilization, where early settlers began cultivating rice and millet in the fertile plains along the river. The Yellow River provided essential resources, including water and fertile soil, which facilitated the growth of agricultural practices. As communities settled and adapted to farming, it led to population growth, the establishment of social structures, and advancements in technology and culture in Asia. This historical significance underscores the importance of the Yellow River Valley in the broader narrative of human agricultural development.