What is 'Hinduism'???

The following is not a product of my creativity but a few historic facts that we may be unaware of or intentionally chose to be forgotten... The origin of Hinduism.

We never used to talk in Greek, Persian, or Arabic... Still 'our' religion has got a name from these foreign languages -Hindu-. Greeks and Armenians used to refer people 'Indu/Hindu', who lived besides the river Sindhu. We never have found the usage of the word Hindu in our old literature like Vedas or Manusmriti...

What our religion was called till then? Did it own a name? Or did 'it' exist at all?

History says we didn't have any religion till the arrival and ruling of Muhammadans; around 800AD. But in fact a well established caste system were there, with Brahmans on top of it.

"The Muhammadans called all the non-Muslim inhabitants, without any discrimination, by the common name 'Hindu', which practically meant non-Muslims and nothing more. Indians became 'Hindus', their religion became 'Hinduism' and Brahmans their masters" [1]

- The History of Hindu Imperialism by Swami Dharma Theertha, 1941

If you look any religion, they are alike regardless the place or the era of it's origin. Eg. Buddhism, Christianity, Islam, Jainism, and Sikhism. They have a single prophet or God, have a set of rules with which the religious people to be lived, have a philosophical concept based on which it was built up and a holy book.

"When we think of the Hindu religion, unlike other religions in the world, the Hindu religion does not claim any one prophet; it does not worship any one god; it does not subscribe to any one dogma; it does not believe in any on philosophic concept; it does not follow any one set of religious rites or performances; in fact, it does not appear to satisfy the narrow traditional features of any religion of creed. It may broadly be described as a way of life and nothing more" [2]

- Chief Justice P. B. Gajendragadkar,1995

Kashmir is one of the existing oldest Hindu state... It is named after Kashyapa (Kashyapamar) in the ancient times. A highly Hindu populated region, even in 13th century. But by the census 1901 and 1921 it became a Muslim majority place! [3] [4] [5] [6]. The same goes to Travancore and Kochi in Kerala.

"According to the Census of 1901 the Christian population of Travancore was only six lakhs. By 1931 it rose to 17 lakhs or 33% of the total population."
"A large section of the Hindus was preparing to abandon Hinduism and embrace Christianity rather than continue to live as helots of Hindu society. The Maharaja took courage in both hands and prevented the mass conversion by the famous Temple Entru Proclamation." [1] chapter XVI

Why did it happen? How did it happen? Why would people become intolerant to their own 'religion' whereas a religion is claimed to be established for the well being of citizen of that religion.

If there never were a usage of a terminology called 'Hindu' or 'Hinduism' before the Muhammadans invasion, It never possess the properties of a religion, and Hindus were converted their religion massively implying the Hinduism made them insecure,

What really is Hinduism? What it stands for if not for the well being of the people who follow it? What are we shouting for in the name of Hinduism; recalling 1992 Ayodhya and 2002 Godhra... and are we expecting more in the near future?

Ref:

1.https://ia801809.us.archive.org/17/items/HistroyOfHinduImperialism/Histroy%20of%20Hindu%20Imperialism.pdf

2.http://veda.wikidot.com/hindu

3.http://hinduism.about.com/od/history/a/Kashmir-Paradise-Lost.htm

4.http://hinduexistence.org/2011/04/21/kashmiri-hindus-reclaim-5000-years-of-hindu-history-and-hindu-rights/

5.https://en.wikipedia.org/wiki/History_of_Kashmir#Historical_Demographics_of_Kashmir

6.https://books.google.co.in/books?id=sSn5xuF_ARkC&pg=PA101&lpg=PA101&dq=1921+kashmir+hindu+muslim+population&source=bl&ots=aD94azteSf&sig=tYm4-m87j6ayA_UXQ8dq6qvZi2U&hl=en&sa=X&ved=0ahUKEwiBmIGowvzKAhWPno4KHabLDPoQ6AEIMjAE#v=onepage&q=1921%20kashmir%20hindu%20muslim%20population&f=false