Christian Thomsen and P.F. Suhm introduced the three-age system to classify prehistoric tools into Stone, Bronze, and Iron Ages. This framework became fundamental in archaeological studies, helping to establish a chronological understanding of technological evolution in human history.
| List-I | List-II |
| (A) The dancing girl | (I) Surkotada |
| (B) Terracotta plough | (II) Kalibanga |
| (C) In Harappan culture, the horse remains are reported from here | (III) Mohenjodaro |
| (D) The ploughed fields are found at | (IV) Banawali |
