Iron ore was first processed in _____.

The Gangetic plain was also rich in _____ deposits

The ______ people who inhabited the area of Sapta Sindhu.

The _________ plain was a densely forested area which received heavy rainfall.

The use of iron was started in India roughly _______ years ago.

Iron ore was first processed by

Pure iron is beaten to make weapons and _________.

What is the meaning of 'Saptha Sindhu'?

Most places on _____ have deposits of iron.

________ is added to this ore and heated to a high degree of temperature to produce iron.