India adopted this system because for elections to lok sabha and state legislative assembly India has adopted the FPTP system

The reasons for success of FPTP include :

1 Simplicity and Accountability: The PR system of elections is quite complicated. It can work in small countries but it is unsuitable for a sub- continental country like india. For common voters ,the FPTP system is easy to understand and operate. Voters have to simply choose a candidate or a party while voting. Voters may give importance to either the party or thr candidate or strike a balance between both. In the PR system, voters vote for parties and representatives are chosen as on the basis of party list. As a result no one is real representative. In FPTP , the voters know and can approach the representative of their constituency and can also hold them accountable.

2 . Stable Government: The framers of indian constitution felt that PR system may not provide stable Government in the legislature and PR system may not produce clear majority since seats are alloted in legislature on the basis of vote share. The FPTP system allows largest party or coalition to form a government with a majority, more than PR system of sharung votes may give. The FPTP system therefore provides stability to parliamentary government .

3 . Wide representation: FPTP system encourages representatives of different communities to win election in a locality. The PR system would lead each community to form a nationwide party in India since the nation is full of diverse groups.

1. The lengthiest Constitution in the world : The Indian Constitution is the lengthiest and the most detailed of all the written Constitutions of the world containing 449 articles in 25 parts, 12 schedules, 5 appendices and 101 Amendments.

2. Parliamentary form of Government :The constitution of India establishes a parliamentary form of a government both at the Centre and the State. The essence of the parliamentary government is its responsibility to the Legislature. The president is the constitutional head of the State but the real executive power is vested in the council of ministers whose head is the Prime Minister.

3. Unique blend of rigidity and flexibility: It has been the nature of the amending process itself in federations which had led political scientists to classify federal Constitution as rigid.

4. Fundamental Rights : The incorporation of a formal declaration of Fundamental Rights in part III of the Constitution is deemed to be a distinguishing feature of a democratic 
State. These rights are prohibitions against the State. The State cannot make a law which takes away or abridges any of the rights of the citizens guaranteed in part III of Constitution.

5. Directive Principles of State policy (DPSP) :The Directive Principles of State Policy contained in Part IV of the Constitution, it set out the aims and objectives to be taken up by the States in the governance of the country.

Survival is the state or fact of continuing to live or exist, typically in spite of an accident, ordeal, or difficult circumstances.

The history of human kind is ancient and many research still going on.

There are a lot of historical things, artifacts, monuments and archaeological sites which tell us about the history of early humans.

Some of them are:

• The paintings and writings in caves

• Tools made up of stone

• Food and lifestyle

• The ancient monuments

• Invention of fire

A parsec is equal to about 3.26 light-years(31 trillion kilometres or 19 trillion miles) in length.

A light year is the distance covered by light in one year at the speed of 300,000 kilometres per second.
A parsec is the short of parallactic second,it is an astronomical unit of length used to measure distances to objects outside the solar system.
It is the distance at which an arc of length one astronomical unit subtends an angle of one second of an arc.
1 parsec= 3.26163626 light years
1 light year = 0.30659458 parsec.