early bce communities started investing increased labor preparing land selecting planting tending harvesting particular grain producing plants also domesticated animals including sheep goats pigs oxen humped zebu ''bos indicus'' unhumped ''bos taurus'' castrating oxen instance turned mainly meat sources domesticated draft animals well ref name fisher blockquote bronze age first urbanisation c c bce indus valley civilisation dholavira city indus valley civilisation stepwell steps reach water level artificially constructed reservoirs ref name news ref archaeological remains washroom drainage system
Humanities History Asian history Indian history