People have always felt the need to store river water in the rainy season for use in the dry season. People in ancient India built many hydraulic structures like dams, artificial lakes, tanks and canals to store and divert water for irrigation.

INTERDEPENDENCY OF SECTORS:
To understand this interdependency, let us take an example of a cold drink. A cold drink contains water, sugar 
and artificial flavour. Suppose if there is no sugarcane production then procuring sugar will become difficult 
and costly for the cold drink manufacturer. Now to transport sugarcane to sugar mills and sugar to the cold 
drink plant needs the services of a transporter. A person or system of persons is required to maintain and 
monitor all these movements of goods from farm to factory to shop in different locations. That is where role 
of administrative staffs comes. Let us go back to the farmer. He also needs feritlisers and seeds which are 
processed in some factory and need to be delivered to his doorstep by some means of transportation. 
Moreover, at every step of these activities we require the proper monetary and banking system. So, in a 
nutshell this describes how interrelated all sectors of an economy are.

The way of expressing an abstract idea like freedom or liberty through a symbol that may be person or thing is known as allegory. An allegory has a literal and a symbolic meaning. In the nineteenth century, French artists used the female allegory to represent France. She was named Marianne, She symbolises reason, liberty and the ideals of the republic.

In Germany, the allegory for the nation was again a female figure called Germania. A Broken chain represented abolition of slavery.

 For plantation workers in Assam, freedom meant
the right to move freely in and out of the confined space in which they were
enclosed. It also meant retaining a link with the village from which they had
come. Under the Inland Emigration Act of 1859, plantation workers were not permitted to leave the tea gardens without permission. When they heard of
the Non-Cooperation Movement, thousands of workers defied the authorities,
left the plantations and headed home. They believed that Gandhi Raj was
coming and everyone would be given land in their own villages.

(i) For channelling the flood water of Ganga, water harvesting system was built near Allahabad in the first century BC.
(if) Dams, lakes and irrigation systems were built during the time of Chandragupta Maurya.
(iii) Sophisticated irrigation systems were found in Orissa, Andhra Pradesh, Karnataka and Maharashtra.
(iv) In the 11th century, Bhopal Lake, one of the largest artificial lakes of its time, was built.
(v) The tank in Hauz Khas, Delhi was constructed by lltutmish for supplying water to Siri Fort area in the 14th century

• Mineral resources are basic requirement for economic development.
• Every sector of the national economy— agriculture, industry, transport, commercial and domestic — needs inputs of mineral resources.
• The economic development plans implemented since independence necessarily required increasing amounts of minerals to remain operational.
  As a result, consumption of minerals in all forms has been steadily rising all over the country and we need to conserve it for the future.

 Jallianwalla Bagh massacre holds an important and significant position in the
Freedom Movement of India. It took place in Amritsar on 13 April, 1919. On this
very day a protest meeting against the government’s new repressive measures
(the Rowlatt Act) was being held at Jallianwalla Bagh in Amritsar. The meeting
was attended by a large number of men, women and children. The only entrance
of the park was blocked by the British army on the orders of General Dyer. He
ordered his troops to fire on the crowd without giving a word of warning. Thousands
of people were killed and many were injured. It was the cold blooded murder of
innocent people.
As the news of Jallianwalla Bagh spread, crowds took to streets in many north
Indian towns. There were strikes, clashes with the police and attacks on
government buildings. The government responded with brutal repression. The
Satyagrahis were forced to rub their nose on the ground, crawl on the streets and
do salaam (salute) to all sahibs. People were flogged and villages were bombed

Prudential reasons :- 
-they are based on careful calculation of gains and losses.
-It help to reduce the possibility of conflict between social groups.
-Reservation of constituency for minorities and women in India is a Prudential reason.

Moral reasons :-
- they are based purely on moral considerations.
-It considered as the basic spirit of democracy.
-Decentralization of power in India is an example of moral reason.

US entry into the war proved costly to the Vietnamese as well as the Americans.
Effects of involvements on life within the US
(i) Even though the US had advanced technology and good medical supplies,
casualties were high.
(ii) Several people became critical of the US government for getting involved in a
war that they saw as indefensible.
(iii) When the youth were drafted for the war, the anger spread. Compulsory service
in the armed forces was waived for university graduates. This meant that
many of those sent to fight belonged to working-class families.

Prudential means based on careful calculation of gains and losses.

Majority of people are still employed in agricultural activities. As agriculture provides seasonal employment 
during cropping season so chances of hidden employment are big. Moreover, as history suggests; a developed 
nation’s dependency shifts from primary sector towards tertiary sector in all aspects of economic development, 
so it can be said that India is still way behind because majority still depend on agriculture.
 Secondary and Tertiary Sector have failed to generate enough employment opportunities making a pressure on 
the primary sector. Although educated and skilled workforce does get employed in secondary and tertiary sector 
but for unskilled and semi-skilled workers there is still a shortage of employment avenues

(i) Globalisation has been proved beneficial for the top Indian companies but so
far workers are concerned, globalisation has perished them.
(ii) The top Indian companies have invested in newer technology and production
methods and raised their production standards. Some have gained from
successful collaborations with foreign companies. Globalisation has enabled
some large Indian companies to emerge as multinationals themselves. For
examples: Tata Motors (Automobiles), Infosys (IT), etc.
(iii) But for a large number of small producers and workers globalisation has posed
great problems. They have been hit hard due to competition. Several units
have shut down rendering many workers jobless.
Thus, we can say that the impact of globalisation has not been uniform.