If it asks about a site, recall its location, river, excavator, and special discovery. If it concerns an artefact, distinguish the place where it was found from the material or interpretation attached to it. If it concerns dates, separate Early, Mature, and Late Harappan phases. Archaeological interpretations may change when new evidence appears, so use the standard association accepted in school texts and competitive examinations. After independence, maximum number of Harappan sites have been discovered in Gujarat. Important Gujarat sites include Lothal, Dholavira, Surkotda, Rangpur, Rojdi, Kuntasi, and Desalpur. Gujarat's long coastline facilitated sea trade that was central to Harappan commerce.