5.Aswandam of Nile in Africa, regulation of Rhine in Europe and Hoover dam of Colorado in South America left deep traces in the world history for the social, economy and environment.
7.The AswanDam, for gwymple, stopped the Nile flooding but deprived Egypt of the fertile silt that floods left-all in return for a giant reservoir of disease which is now so full of silt that it barely generates electricity.
8.The AswanDam, for example stopped the Nile flooding but deprived Egypt of the fertile silt that floods left - all in return for a giant reservoir of disease which is now so full of silt that it barely generates electricity.
