whole history from early man to indus valley civilization.
Are you getting ready to write a book? =)
http://www.google.com/search?hl=en&site=&source=hp&q=history+humans+to+indus+valley+civilization&oq=history+humans+to+indus+valley+ci&aq=0w&aqi=q-w1&aql=1&gs_l=hp.1.0.33i21.8694.26539.0.30213.33.31.0.2.2.0.270.3260.9j21j1.31.0.pfwc.1.0.0.hdrjs_0O26I