for example , the fields of western farms feed the 50 us and many other parts of the world , and india ' s dams practices have enabled that countries to be self - sufficient in agricultural production around 1974 . in addition , in many parts of the usa governments have helped to resolve life - threatening problems such as poverty from absence of economic development , starvation as a type of drought , damage from floods , and continuous disease from lack of sewerage gas providers .
Dam building prevents life-threatening situations.