The capital of Pakistan is Islamabad, which has nine letters. Dacca, Lahore, Karachi, India, Urdu, IRAN, and Indus are all related to Pakistan in some way. Dacca is the former capital of Bangladesh, which was formerly part of Pakistan. Lahore is the second largest city in Pakistan and is known for its rich cultural heritage. Karachi is the largest city in Pakistan and is the country's financial hub. India is Pakistan's neighbor to the east and the two countries have a long history of conflict. Urdu is the official language of Pakistan and is spoken by most of the population. IRAN is located to the west of Pakistan and the two countries share a border. The Indus River is the longest river in Pakistan and is an important source of water for the country.