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

Pure iron is beaten to make weapons and _________.

The expansion of ____ necessitated domestication of cattle and sedentary life.

The original inhabitants of the plain areas were living by ______ small pieces of land located at higher levels.

Most places on _____ have deposits of iron.

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

The credit of employing techniques of iron goes to ____________.

The Vedic people used a plough drawn by

Iron ore was first processed by

What is the meaning of 'Saptha Sindhu'?