The reaped results of the above mentioned conference embodied in the establishment of the united nation
environment program, that emphasized on the need to follow the environmental programs to enhance the
environmental corporation between different countries (Sheikh, 2002). The concept of sustainable development
occupied the forefront of Rio loud Janeiro conference held in Brazil in 1992, where it was publicly
acknowledged that the quality of the environment and the safety of the economy are linked together, accordingly
the global environmental cooperation between the underdeveloped and developed countries in terms of common
interests to protect the future of the earth (Albu et al., 2011).