This article is a quest for a common basis for these civilisations. Every civilisation is identified by a degree and direction of development in the following areas. 4. technology 5. The direction of development in societies and in persons are very varied in each of these fields. After a long search, I feel that everything is in the mind.
Civilisation is a movement of thought from coarser forms to more finer forms.
The subtler the general thought pattern is, the more advanced a civilisation is. The subtler a person's mental process reach, the more developed the person is. With this yard-stick, one is able to answer a wide range of questions. A few of the questions which have arose in my mind before I arrived at this yard-stick and their answers are below. I am sure you will disagree on several fronts.