Why was sati prevalent in our country?

In this video, Dr. K K Aggarwal, Padma Shri Awardee, Editor-in-chief, IJCP Publications. Will discuss why sati was prevalent in our country. The whole sati concept was based on advait philosophy. After the death of the husband, the wife has to burn her sexual desires. Burning of sexual desires in mythology is depicted as burning fire. The women has to burn herself to the fire of knowledge and shift her sexual energy into the spiritual energy.