The reason why we know less about Harappan civilization than
about Egypt or Mesopotamia is because the researchers or historians was not
able to learn about this civilization and the writing system of which these civilization
has, is hard to figure out because of their own writing system.
Answer:Evolutionary model of technological change
Explanation:
Technological changes are advancing and dominating more and more as people try to improve their lives on earth and making everything more efficient and more easy to use. Everything that is invented and innovated aims at improving the quality of life and making more portable objects which are more efficient to use.
Answer is E
Hope this helped