Real estate in Developing Countries : Where did all the money come from

I am asking w.r.t India. In the last decade and half , there has been an astronomical spurt in the real estate prices. This has not been accompanied by proportional improvement in the quality of life of the common man. This also is not in proportion with the industrial or the agricultural output.
How did this happen? Where did all the money come from?
I cannot take the history of real estate prices of developed countries such as USA and try to compare the same with that of India, as there are lot different factors that influenced the price behavior. Some of which come to my mind are
1) Globalization
2) Black money
3) Exports Imports
4) Growth of Service sector
5) Role of central bank
6) Remittances from North America and the middle east
7) FII and FDI(Foreign Institutional investors and Foreign Direct Investment)
8) Role of Government and the opposition.
9) Rise of middle class.
10) Role of Banking sector.
11) Nature of players in the Real estate market at different scales right from local level (consisting of only an individual) to the national level(corporation)
If I want to research on the above topic,
what are the facts I should gather?
what are the resources I should be looking for?
What should be my direction?
what are the stats I should be looking for?
Are there any imp considerations other than the above I am missing?