The answer to this question: C
Answer: The Demographic Yearbook.
Explanation: Demographic Yearbook contains the collection of the official statistics about a variety of topics having a large range. They usually contain the knowledge about the status of the birth, death, population ,etc on yearly basis. They also represent the issues that arise according to the statistic such as education activity,economic rate,mortality rates, etc.This statistics has been collected from the United Nations .
Answer:
Explanation:
https://prezi.com/zklhmyhk-bpz/ancient-china-agricultural-inventions/
this is a presentiation that has diffrent inventions and their impact. I hope this helps!
