the following major factors: Existence of enlarged, sustained effective demand for the product of key sectors. Introduction of new productive technologies and techniques in these sectors. The society's increasing capacity to generate or earn enough capital to complete the take-off transition. Activities in the key sector should induce a chain of growth in other sectors of the economy, that also develop rapidly. An example of a country in the Take-off stage of development is Equatorial Guinea. It has the largest increases in GDP growth since 1980 and the rate of productive investment has risen from 5% to over 10% of income or product. In the table note that Take-off periods of different countries are the same as the industrial revolution in those countries. The drive to maturity After take-off, there follows a long interval of sustained growth known as the stage of drive to maturity. Rostow defines it "as the period when a society has effectively applied the range of modern technology to the bulk of its resources." Now regularly growing economy drives to extend modern technology over the whole front of its economic activity. Some 10-20% of the national income is steadily invested, permitting output regularly to outstrip the increase in population. The makeup of the economy changes unceasingly as technique improves, new industries accelerate, older industries level off. The economy finds its place in the international economy: goods formerly imported are produced at home; new import requirements develop, and new export commodities to match them. The leading sectors in an economy will be determined by the nature of resource endowments and not only by technology. On comparing the dates of take-off and drive to maturity, these countries reached the stage of maturity in approximately 60 years. The structural changes in the society during this stage are in three ways: Work force composition in agriculture shifts from 75% of the working population to 20%. The workers acquire greater skill and their wages increase in real terms. The character of leadership changes significantly in the industries and a high degree of professionalism is introduced Environmental and health cost of industrialization is recognized and policy changes are thus made. During this stage a country has to decide whether the industrial power and technology it has generated is to be used for the welfare of its people or to gain supremacy over others, or the world in toto. A prime example of