Sources, background and structure of Indian Constitution

1.)    What are Major Sources of Indian Constitution?

The Indian Constitution is borrowed from almost all the major countries of the world but has its own unique features too.
1.government of Indian act of 1935.
2.British Constitution
3.US Constitution
4.Irish Constitution
5.Canadian Constitution
6.Canadian Constitution
7. Constitution of Germany
8. French Constitution
9.South African Constitution
10.Japanese Constitution
11.Constitution of former USSR
2.) The sources of Indian constitution?
Many call Indian constitution a copy paste work and a glaring example of plagiarism. Most parts of it have been copied from Government of India Act 1935. The chairman of drafting committee Dr. Ambedkar had said in this regard that – “As to the accusation that the Draft Constitution has [re]produced a good part of the provisions of the Government of India Act, 1935, I make no apologies. There is nothing to be ashamed of in borrowing. It involves no plagiarism. Nobody holds any patent rights in the fundamental ideas of a Constitution….”
3.) What are the fundamental duties?
List of Fundamental Duties: Art. 51A, Part IVA of the Indian Constitution, specifies the list of fundamental duties of the citizens. It says “it shall be the duty of every citizen of India:
To abide by the constitution and respect its ideal and institutions;
To cherish and follow the noble ideals which inspired our national struggle for freedom;
To uphold and protect the sovereignty, unity and integrity of India;
To defend the country and render national service when called upon to do so;
To promote harmony and the spirit of common brotherhood amongst all the people of India transcending religious, linguistic and regional diversities, to renounce practices derogatory to the dignity of women;
To value and preserve the rich heritage of our composite culture;
To protect and improve the natural environment including forests, lakes, rivers, and wild-life and to have compassion for living creatures.
4.) The background of the Indian constitution
The major portion of the Indian sub continent was under British rule from 1857 to 1947. The Constitution of India repealed the Indian Independence Act 1947 and Government of India Act, 1935 when it came into effect on 26 January 1950; India also ceased to be a dominion of the British Crown and became a sovereign democratic republic after the constitution’s commencement. The date of 26 January was chosen to commemorate the anniversary Purna Swaraj of 1930.
5.) Explain the structure of Indian constitution.
The Indian constitution is the world’s longest for a sovereign nation. At its commencement, it had 395 articles in 22 parts and 8 schedules.It is made up of approximately 145,000 words, making it the second largest active constitution — after the Constitution of Alabama — in the world.In its current form, it has a preamble, 448 articles, which are grouped into 25 parts; it also has 12 schedules, 5 appendices and 101 amendments, the latest of which came into force on 1 July 2017.