Title: Strategy of unbalanced growth
Content:  Unbalanced growth is a natural path of economic development. Situations that countries are in at any one point in time reflect their previous investment decisions and development. Accordingly, at any point in time desirable investment programs that are not balanced investment packages may still advance welfare. Unbalanced investment can complement or correct existing imbalances. Once such an investment is made, a new imbalance is likely to appear, requiring further compensating investments. Therefore, growth need not take place in a balanced way. Supporters of the unbalanced growth doctrine include Albert O. Hirschman, Hans Singer, Paul Streeten, Marcus Fleming, Prof. Rostov and J. Sheehan.
Title: Strategy of unbalanced growth
Content: Hirschman, Albert O. (1958). The Strategy of Economic Development. New Haven, Conn.: Yale University Press. ISBN: 0-300-00559-8 ; Streeten, Paul (1959) Unbalanced Growth, Oxford Economic Papers New Series, Vol. 11, No. 2 (Jun., 1959), pp. 167–190  Astuatio
Title: The Strategy of Economic Development
Content:  The Strategy of Economic Development is a 1958 book on economic development by Albert O. Hirschman. Hirschman critiques the theories of balanced growth put forward by Ragnar Nurkse and Paul Rosenstein-Rodan, which call for simultaneous, large-scale increases in investment across multiple sectors to spur economic growth. Hirschman argues that such strategies are unrealistic and often infeasible in underdeveloped countries. In place of balanced growth, Hirschman proposes a theory of unbalanced growth, where "imbalances" and "pressure points" created by the growth process can be used to identify areas where policymakers can intervene. In addition, Hirschman introduces the notions of backward linkages---the demand created by a new industry for intermediate goods---and forward ones---the knock-on effects on industries who use the present industry's goods as inputs. Along with Arthur Lewis's Theory of Economic Growth, and Walt Rostow's Stages of Economic Growth, the Strategy is often considered one of the seminal works of development economics.
Title: Ragnar Nurkse's balanced growth theory
Content:  Ragnar Nurkse's balanced growth theory too has been criticised on a number of grounds. His main critic was Albert O. Hirschman, the pioneer of the strategy of unbalanced growth. Hans W. Singer also criticised certain aspects of the theory. Hirschman stressed the fact that underdeveloped economies are called underdeveloped because they face a lack of resources, maybe not natural resources, but resources such as skilled labour and technology. Thus, to hypothesise that an underdeveloped nation can undertake large scale investment in many industries of its economy simultaneously is unrealistic due to the paucity of resources. To quote Hirschman, ""If a country were ready to 
Title: Economic growth
Content:  Unified growth theory was developed by Oded Galor and his co-authors to address the inability of endogenous growth theory to explain key empirical regularities in the growth processes of individual economies and the world economy as a whole. Unlike endogenous growth theory that focuses entirely on the modern growth regime and is therefore unable to explain the roots of inequality across nations, unified growth theory captures in a single framework the fundamental phases of the process of development in the course of human history: (i) the Malthusian epoch that was prevalent over most of human history, (ii) the escape from the Malthusian trap, (iii) 
Title: Unified growth theory
Content:  Unified growth theory was developed in light of the failure of endogenous growth theory to capture key empirical regularities in the growth processes and their contribution to the momentous rise in inequality across nations in the past two centuries. Unlike earlier growth theories that have focused entirely on the modern growth regime, unified growth theory captures the growth process over the entire course of human existence, highlighting the critical role of the differential timing of the transition from Malthusian stagnation to sustained economic growth in the emergence of inequality across countries and regions. Unified growth theory was first advanced by Oded Galor and 
Title: Ragnar Nurkse's balanced growth theory
Content:  The balanced growth theory is an economic theory pioneered by the economist Ragnar Nurkse (1907–1959). The theory hypothesises that the government of any underdeveloped country needs to make large investments in a number of industries simultaneously. This will enlarge the market size, increase productivity, and provide an incentive for the private sector to invest. Nurkse was in favour of attaining balanced growth in both the industrial and agricultural sectors of the economy. He recognised that the expansion and inter-sectoral balance between agriculture and manufacturing is necessary so that each of these sectors provides a market for the products of the other and in turn, supplies the necessary raw materials for the development and growth of the other. Nurkse and 
Title: Macrohistory
Content:  until the emergence of the so-called Pax Mongolica when trade relations in Eurasia stabilized. According to economists Robert Solow, Brian Snowdon, Jason Collins, and to an article in the "Break Through & Mind Changing Idea" section of Wired (Japan), Oded Galor's unified growth theory is a macro-historical analysis that has significantly contributed to the understanding of process of development over the entire course of human history and the role of deep-rooted factors in the transition from stagnation to growth and in the emergence of the vast inequality across the globe. According to Wired (Japan) Galor's theory is a global theory comparable to Newton's "law of gravitation", Darwin's "evolution theory" or Einstein's "general relativity".
Title: Oded Galor
Content:  Backdrop Throughout most of human existence, economic growth has been all but absent across the globe. But two centuries ago, some regions of the world began to emerge from this epoch of economic stagnation into a period of sustained economic growth, profoundly altering the level and distribution of wealth and health around the world. In his book Unified Growth Theory, Galor provides a global theory explaining what has triggered this remarkable transformation in human history. Synopsis Unified Growth Theory is the first theory that sheds light on the determinants of the process of development since the emergence of Homo sapiens. Galor, who founded the field of unified growth theory, identifies the historical and prehistorical forces behind the differential transition timing from stagnation to 
Title: Balanced-growth equilibrium
Content:  In macroeconomics, the balanced-growth path of a dynamic model is a trajectory such that all variables grow at a constant rate. In the standard exogenous growth model, balanced growth is a basic assumption, while other variables like the capital stock, real GDP, and output per worker are growing. Developing economies may adopt a strategy of unbalanced growth to rectify previous investment decisions, as put forward by economist Albert O. Hirschman. In microbiology, the state of balanced-growth means "every extensive property of the growing system increases by the same factor over a time interval". It is ideal for performing experiments because all bacteria are at about the same state (as opposed to stationary phase, for example, where some cells are alive and others are dead). Machines like chemostats can be used to culture bacteria and keep them in a 

Question: who has given the theory of unbalanced economic growth?
Answer: Hirschman.