Sumatra consists of seven provinces: Bengkulu, capital Bengkulu; Jambi, capital Jambi; Lampung, capital Tanjungkarang; Riau, capital Pekanbaru; Sumatera Barat, capital Padang; Sumatera Selatan, capital Palembang; and Sumatera Utara, capital Medan. Of these provinces Sumatera Utara is the most...