Short answers, pulled from the story.
Chittagong is Bangladesh's second-largest city and its commercial capital, accounting for 12 percent of the country's GDP, 40 percent of industrial output, 80 percent of international trade, and 50 percent of tax revenue. It is home to the Port of Chittagong, the busiest port in Bangladesh and the Bay of Bengal.
The Port of Chittagong is one of the world's oldest ports, with a recorded history dating back to the 4th century BC. Its harbor was noted by Ptolemy on his world map in the 2nd century as one of the most impressive ports in the East, and it was a stop on the southern branch of the Silk Road.
The Bangladeshi Declaration of Independence was broadcast from Kalurghat Radio Station in Chittagong in 1971. Ziaur Rahman and M A Hannan announced the declaration, and A K Khan drafted the English version. Mukti Bahini naval commandos also sank several Pakistani warships at Chittagong during Operation Jackpot in August 1971.
Nobel laureate Muhammad Yunus was born in Chittagong. He is an economist and entrepreneur who later served as the fifth chief adviser of Bangladesh.
Chittagong earned this name because of the large number of major Sufi Muslim shrines in the district. Prominent dargahs include the mausoleums of Shah Amanat, Badr Auliya, Miskin Shah, Garibullah Shah, and the shrine of Bayazid Bastami, among many others.
The Mughals recaptured Chittagong in 1666 under viceroy Shaista Khan. A 6,500-strong Mughal army attacked from the jungle while 288 naval ships blockaded the harbor; after three days of battle the Arakanese surrendered, ending roughly 70 years of Arakanese control.