On Saturday, Prime Minister Narendra Modi inaugurates Sardardham Bhavan in Ahmedabad through video conferencing. During his address, PM said the 9/11 terror to be remembered as an attack on humanity. The attacks taught many things to the world. But this date also taught a lot more things to the world. It was September 11, 1839, when Swami Vivekananda introduced the human values of India to the world. Watch the video to know more.