Hai, I hope you're doing well
Answer:
The first occurrence (chronologically) was
Regional kingdoms began to replace most of the city-states of the northern region of Harappan Society.
Explanation:
Of all that are stated in the question, Regional kingdoms began to replace most of the city-states of the northern region of Harappan Society first occured
Around 4,350 years ago, many factors responsible for migration led people to abandon their settlements and migrate to southern and eastern regions of India, according to a study by Indian Institute of Technology Kharagpur.
This is also known as Indus valley civilization
The city you are looking for is Beijing
I know one of the answers are "the fingers of the wool pluckers would be eaten by the acid that was used to loosen the wool and pulled off by bare hands"
But I am not sure what the other two are, if you get them please let me know.
