I wish that these topics have references to make my work easy ,and thanks in advance
You are asking for the whole world and all known history. You have to narrow it down to a very specific topic and a rather short time span.
Here is a book that might interest you. It is a summary of cultural collapses. When you understand the process, then you realize that all collapses are similar, so you can analyze any of them and understand all of them. That is of current interest since many of the world's nations are collapsing right now. The USA has been showing symptoms since World War 2.
TODAY, newspaper headlines are dominated by the threat of nuclear catastrophe and the relentless, worldwide, economic decline. These are not the cause of civilization decline. Other civilizations have fallen in times past. None of them fell because of nuclear warfare. And often their economies were still functioning adequately when they collapsed. The caused of their fall, in many cases historians trace it to the collapse of moral standards, a rotting from within. One example is
Children are being robbed of the sense of security. Professor Geoffrey P. Ivimey of the University of London said that too often the parents who try to hold the family together practice “parking” children at nursery schools, day-care centers or in front of the television set. Such practices, the professor said, have spawned a generation of people “who have never learned to be parent.
To avoid being contaminated by it now and would like to be confident that the earth will be freed from it in the near future, why not see for yourself what the Bible says?
Then you can hope to benefit from the promise God himself has made: “They will not do any harm or cause any ruin in all my holy mountain; because the earth will certainly be filled with the knowledge of Jehovah as the waters are covering the very sea.”—Isaiah 11:9. That promise will soon come to pass.
For more information on this subject and others, please go to jw.org "Online Library." Also for free downloads, publications or read online.