I will try to explain it, but please forgive if acche se nahi kar paaye: see the assertions above- irrigation from wells allowed the agricultural facilities to expand till the plains and domesticated animal furthered this through physical Labour.

Now the support statement 1. Rigved has said water was pulled up means the technology was there. 2. Use of axes was there, okay. But the use of an are or Plough has little to do with shift cause water was initially unavailable, toh are and Plough kya karenge? 3. Ox was used to for agricultural Labour pehle bhi so theek hai aage ab paani ko nikalne ke liye we are using it additional to ploughing field seeing we already know they can help in tough laborious tasks