What innovation that originated in the Huang River Valley spread to other civilizations?

One innovation that originated in the Huang River Valley and spread to other civilizations is the development of writing. The ancient Chinese civilization in the Huang River Valley is credited with the invention of one of the earliest forms of writing, known as oracle bone script. This system of writing involved inscribing characters on animal bones or turtle shells, and was mainly used for divination purposes.

Over time, this writing system evolved and developed into more sophisticated forms, such as the bronze script and seal script. These ancient Chinese scripts influenced the development of writing systems in neighboring civilizations, such as the Shang dynasty's influence on the writing systems of early Korean kingdoms and cultures.

The development of writing in the Huang River Valley had a profound impact on communication, administrative record-keeping, and the preservation of knowledge. The spread of this innovation allowed other civilizations to develop their own writing systems and paved the way for the dissemination of ideas, literature, and cultural exchange.