Late 19th-century anthropologists who saw "primitive" societies as presenting an early stage in the development of religion were using the:

Evolutionary approach.

Explanation:

An evolutionary approach is a pattern or system of using evolutionary ideas in studying and learning about an individual's cultural beliefs and behavior, habits etc. This approach is used by anthropologists to try and explain how humans evolve through the ages.

In taking the "primitive" societies as the early stage in the development of religions, anthropologists are using the evolutionary approach. In this way, they are turning to the evolution process/ system to determine and learn about religious development.

the first settlements began along the huang river because of the importance of the huang river in the beginning of china. it goes back to the story, “the tale of emperor yu”, which references the tale of the great flood, which was caused by the huang river and was believed to create and influence china’s making.

the use of electrical signals that transit messages is know as