In south,west or the mid India sati was not heard of and was not practised.
Mahabharat did not happen in South India, Sati was practiced there.
The ancient Hindu tradition called ‘sati’ (or ‘suttee’), wherein a widow would burn herself to death on her husband’s pyre, was initially a voluntary act that was considered to be quite courageous and heroic, but it later became a forced practice. Although sati is now banned all over India and no longer practised, it has a rather dark history that you must know.
According to ancient Hindu customs, sati symbolised closure to a marriage. It was a voluntary act in which, as a sign of being a dutiful wife, a woman followed her husband to the afterlife. It was, therefore, considered to be the greatest form of devotion of a wife towards her dead husband.
With time, it became a forced practice. Women who did not wish to die like this were forced to do so in different ways. Traditionally, a widow had no role to play in society and was considered a burden. So, if a woman had no surviving children who could support her, she was pressurised to accept sati.
Historical records tell us that sati first appeared between 320 to 550 CE, during the rule of Gupta Empire. Incidents of sati were first recorded in Nepal in 464 CE, and later on in Madhya Pradesh in 510 CE. The practice then spread to Rajasthan, where most number of sati cases happened over the centuries.
Initially, the practice of sati was confined to royal families of the Kshatriya caste and only later spread to the lower castes, becoming widely practised among all social classes.
Sati was at its peak between the 15th and 18th centuries. During this period, as many as 1000 widows were burned alive every year, most commonly in India and Nepal.
So Mr. Vaagmi as usual partial Knowledge or accepting only the facts convenient to your position.