Ethnic identity development includes the identity formation in an individual's self-categorization in, and psychological attachment to, (an) ethnic group(s). Ethnic identity is characterized as part of one's overarching self-concept and identification. It is distinct from the development of ethnic group identities.

Caste can be defined as hereditary endogamous group, having a common name, common traditional occupation, common culture, relatively rigid in matters of mobility, distinctiveness of status and forming a single homogenous community.

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Different groups sought to represent their interests by forming groups or associations as:

1. Industrialists from associations such as the Federation of Indian Chambers and Commerce (FICCI) and Association of Chambers of Commerce (ASSOCHAM).
2. Workers form Trade Unions such as the Indian Trade Union Congress (INTUC) of the Centre for Indian Trade Unions (CITU).
3. Farmers form agricultural unions such as Shetkari Sangathan. Agricultural Labour have their own unions. In a democratic form of government political parties are key actors.
4. A political party may be defined as an organisation oriented towards achieving legitimate control of the government through an electoral process. Political parties are based on certain understanding of society and how it ought to be. In a democratic system, the interests of different groups are also represented by political parties, who take up their case. Different groups will work towards influencing political parties. When certain groups feel that their interests are not being taken up, they may move to form an alternative party. These particular groups can, also, form pressure groups who lobby with the government.
5. Interest groups are organized to pursue a specific interest in the political arena, operating primarily by lobbying the members of legislative bodies. In some situations, there may be political organizations which seek to achieve power but denied the opportunity to do so through standard means. These organizations are best regarded as movements until they achieve recognition.

Malthus’s theory of population growth – outlined in his Essay on Population (1798)- was a rather pessimistic one. He was of the view that the human population tends to grow at a much faster rate than the rate at which the human subsistence can grow. Therefore, humanity is condemned to live in poverty forever because the growth of agricultural production will always be overtaken by population growth. Because population growth is always more than the growth in production of subsistence resources, the only way to increase prosperity is by controlling the growth of population.
According to Malthus, there are two checks of population control:

1. Positive Checks: Those checks which are implemented by nature are called positive checks. That is why the death rate increases. For example, war, epidemic, earthquake, famine, tsunami, flood, etc. These natural checks are very painful to put they reduce the population to a great extent. These checks are not permanent.
2. Preventive Checks: These types of checks are the efforts made by humans. There are divided into two parts-morality and prevention through artificial means. In moral checks person uses his mental level to control the population. According to Mathus, moral checks are good but artificial checks are against religion.

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