Districts of Bangladesh AND short description

The divisions of Bangladesh are divided into 64 districts, or zila (Bengali: জেলা jela). The districts are further subdivided into 493 sub-districts, or upazila (উপজেলা upojela).
The district are run by a Deputy Commissioner popular name is "DC" is appointed by the government from a Deputy secretary of B.C.S. Administration Cadre.

Ancient Bengal

We know that the history of Bengal (by which we mean modern-day Bangladesh and West Bengal in India) can be traced back more than 2,500 years. However, we cannot be sure of much of its history until around the 4th century AD because there are so few historical sources that have survived. However, after the 4th century AD, when the Gupta Empire began to rule India, more reliable written records became available.For the period before the 4th century AD, historians have tried to get a sense of what happened from scanty references found mainly in various religious texts which were not usually intended to be accurate historical documents