Slowly and gradually, these cities came closer forming different nations of the world. In this way, along with the growing population, the societies grew into civilizations and prospered over hundreds of years. The social orders that initially comprised a bunch of people, with the passage of time became large communities and large nations. Now, the whole world is coming closer day by day and is becoming one big global village. The current global trend supports globalization that emphasizes on living like a one big global community.
With all these changes in societies, along the course of time, there came many opportunities, new possibilities and broader horizons, but with that equally came many risks, threats, uncertainties and crises. Cultures changed and so did people. With the new developments there came better education, better health, better life style, better communication and transportation, better techniques, procedures and processes, in fact, a whole new way of life; and with passing time, this process of evolution of the societies is becoming faster and faster that the way the social changes have bombarded us in last five decades, it had never done before. If we look at the life of the human being not very different from us who lives fifty years ago, we find such huge differences that it becomes very difficult to compare.
Science and technology has prospered so much that the diseases that were thought of as completely incurable can now be treated using advanced techniques and processes. Treatment of life threatening diseases like cancer or life endangering situations like failure of a vital organ of the body is now possible and thus more and more precious lives can be saved. The new researches promise better education and better learning in a vast variety of areas. Researches are being conducted in practically every field of life. Science and technology has made life so easy that many tasks can easily be accomplished by just a flick of your finger over a button so the work that used to take weeks can now be done in days. So many things that man could only dream of as something miraculous are now a part of our every day lives. Life has become automatic; automatic cars, automatic machines, automatic gizmos and gadgets, even automatic homes. All one has to