class 10 geography chapter 3 notes english
• In the first century B.C. Sringaverapura near Allahabad had sophisticated water harvesting system channeling the flood water of the river Ganga.• During the time of Chandragupta Mauriya, dams lakes and irrigation systems were extensively built.• Evidences of sophisticated irrigation works have also been found… Read More »class 10 geography chapter 3 notes english