Explained: What it took to frame India's Constitution

India's Constitution, adopted on this day in 1949 after 167 days of debate, is the world's longest. Handwritten and calligraphed, it involved 274 members, 36 lakh words, and 11 sessions. BR Ambedkar led the drafting, with artistic contributions from Shantiniketan artists. The document has been amended 106 times since its inception.