text: jab maine indus valley civilization ke baare mein suna,toh mujhe laga ki log kitne advanced the, kya tu ne unki lifestyle ke baare mein suna hai?bilkul, unka urban planning aur sanitation system toh aaj bhi modern cities ko challenge karta hai, yaar, unki kahani sun ke lagta hai ki hum aaj bhi unse kuch seekh sakte hain.