Anyone with the desire can learn a martial art. There are some religions that would frown upon the enterprise, but most don't object.
At birth he would have been a high caste Hindu. The options of Christianity and Islam would have not been open to hin since these were not existant fo several hundred years after his death.
1878
Because people are fond of mimicking one another, it is how we learn to become who we are since birth.
Yes, you do. It is called sparring, like many other forms of martial arts. In the form that I take, there is ring sparring, which is scored with a 3-point system - first to three points wins. The system can vary slightly within this martial art, of course, since everyone can do it a different way if that's how they learn it.
India, and almost whole world was Hindu several millenniums ago. India is the land of the Hindus since eternity. India is the cradle of the Vedic/Hindu civilization.
since the world started
since its preachings and practices are all spiritual
Buddhism
The philosophy of Karma as enunciated in Hinduism explains clearly that a person leading an evil life shall have to pay for the evil doings in this birth or in the next birth, and he cannot escape the punishments for such doings since Hinduism firmly believes in incarnation theory
The Hindu Kush mountains are connected to the Himilayas. So, there is probably more than one mountain since the Himalaya mountains have many.
Martial arts have been known since the first human hit another human. As they learned what worked best, they passed it down to others. The legend of the Asian Martial arts is that it was the Yogis of ancient India example Krishna Maharaja studied sastrvida as well as the first Mahayana Buddhist monk to travel to China via the silk road, he was Bhodi Dharma who taught the first Shaolin monks and they interpreted it into mimicking the animals around them into Kung fu.
You have them since birth.