Bengal finds a coveted place even in pre-historic times. At the time of Alexander's invasion a powerful king called Gangaridai ruled over Bengal Ascendancy of the Guptas and the Mauryas had little effect on Bengal. Later Sasanka became King of Bengal and is said to have played  an important role in north-eastern India in the early half of the seventh century. He was succeed by  Gopala, who founded the Plaa dynasty which ruled for centuries and had created a huge empire. The Pllas were followed by the Sena dynasty which was ended by Muslim rulers from Delhi. Various Muslim rulers and governors till the Mugahal period in 16th century ruled Bengal.
     
After the Mugahls, history of modern Bengal begins with the advent of European and English trading companies. the Battle of Plassey in 1775 changed the course of history when the English first gained a strong foothold in Bengal and India. In 1905 it was partitioned to achieve some political returns but people's growing movement under the auspices of the congress Party led to the reunion in 1911. This triggered of the hectic movement for freedom which culminated with Independence in 1947 and partition. 
     
After 1947, the merger of native settlement began which ended with its final reorganization in 1956 when some Bengali speaking areas of a neighbouring state were transferred to west Bengal.