Chittagong (Chittagonian) is a commerce and industry hub, and a port city, in southeastern Bangladesh and the capital of an eponymous district and division. Built on the banks of the Karnaphuli River, the city is home to Bangladesh's busiest seaport and has a population of over 5.5 million, making it the second largest city in the country. A trading post since the 9th century, Chittagong has a multicultural heritage of Islamic, Hindu and Buddhist traditions. The modern city developed during British rule as a railway, oil and tea trading hub. The city also became a focal point for revolutionary activities against the British, notably the armed uprising led by Surya Sen in 1930. It was also an important military base and supply point for Allied forces during the Burma Campaign in World War II. After the partition of India in 1947, Chittagong became part of East Pakistan.
Contributions by Zayiaf62089, Ragib, and Armanaziz.