(i) Important people (priests, rulers) took ritual baths in this tank.
(ii) The tank was lined with kiln burnt bricks, plaster of gypsum and bitumen was used to make the tank water-resistant.
(iii) Water was probably brought in from a well and drained out after use.

(i) These stone tools were used to cut meat and bone, scrape bark and hides, chop wood for firewood, stitch clothes, dig the ground, etc
(ii) Stone tools were probably made using two different techniques, i.e., stone on stone and pressure flaking.
(iii) In this technique, the core (stone from which the tool was to be made) was placed on a firm surface. Hammer stone was used to strike the core stone to remove flakes that could be shaped into tools.

(i) Most of the things that have been found by archaeologists are made of stone, shell and metal, including copper, bronze, gold and silver.
(ii) Copper and bronze were used to make tools weapons, ornaments and vessels.
(iii) Gold and silver were used to make ornaments and vessels.

(i) Many of the Harappan cities had covered drains which were laid out in straight lines.
(ii) Each drain had a gentle slope, so that water could flow through it.
(iii)Very often, drains in houses were connected to those on the streets and smaller drains led into bigger ones.

The human brain helped to distinguish between edible and non-edible plants, waste land, crop land and forest land. Thus, the early man obtained mastery over his environment.

The Stone Age man lived in hilly areas by the side of rivers or lakes. In the beginning, he took shelter in the caves, rock shelters and later, in mud-huts. He lived by the side of lakes or rivers, to quench his thirst and for food i.e., animal and fish.

It is important to study about our past as it gives a lot of information regarding the political, social, economic and cultural life of the people in the earlier days. By studying about our past:
(i) We can find out about the eating habits, the clothing and housing pattern of the people of the earlier times.
(ii) We can gather information about the lives of hunters, farmers, merchants, priest, craftsmen, musicians, poets and scientists.
(iii) We can learn about the lives of children, the songs they sang, the plays they saw, the games that they played and the kind of toys with which they played.

In the earlier times, writings were done on relatively hard surfaces such as blacked clay, stone or metal. Since, these objects were imperishable, these writings usually survived for a long time.

Historians read the literary sources carefully and take clues from them. On the basis of such information, they try to create an understanding of the socio-cultural political set- up and place it in the right context and time.

Battles were fought to capture land, property and cattle, which was important for pasture. Some battles were fought on the issue of water and to make people slaves.