The historic region of Bengal has been a home to many different cultures and territories. In ancient times, what we know today as a single entity was in fact a collection of separate entities, which included Magadha, Pundra (which covered what is present-day West Bengal), Vanga (which covers modern-day Bangladesh) and Suhma. Over the first millennium AD, these areas came together to form what we recognise today, and thus began a very dynamic historical period which saw the rise and fall of great dynasties.
The Dawn of Independence: Gauda Empire.
The rise of independent Bengal’s political history came into full swing by the 7th century AD, at the time of the Gauda kingdom’s rise. After the fall of the Gupta Empire, a tribal chief named Shashanka took over. He is noted to be the first for whom we have a record as a breakaway king of Bengal. Shashanka brought together fragmented areas and made his capital at Karnasuvarna. Also a great ruler, he was at the same time as and a rival to the well-known King Harshavardhana of Thaneshwar. But with his death, which marked the end of his line, the region fell into what is known as Matsyanyaya — a time of anarchy.

The Pala Dynasty: A time of great success and prosperity.
In the mid-8th century, order was restored with the rise of Gopala, who saw the founding of the Pala Dynasty at the hands of regional chieftains. This was the beginning of a golden age of peace and growth. Gopala’s son, Dharmapala, and his son, who succeeded him, Devapala, were dynamic rulers who expanded Bengal’s influence in north India. They were also great supporters of art and science, which flourished under them, and the area became a hub of Buddhist culture. But by the 11th century, internal rebellions and external invasions began to wear at the edges of their power, which in turn made way for new leaders.
The Sena Revival
As the power of the Pala Dynasty declined, the Sena Dynasty rose to power out of the Radha region to assert itself. Unlike their Buddhist forerunners, the Senas were very much Hindu, which they claimed back to their origin in the Karnata area of the south. Rulers such as Vijaya Sena and Ballala Sena did what it took to consolidate power, which saw for the first time the uniting of all Bengal under one ruler. The Sena period also saw a revival of what was traditional and orthodox Hindu as well as a renaissance in Sanskrit literature. That said, their rule came to an end in the early 13th century at the hands of the Turkic forces, which invaded.
The Islamic Sultanates
In the Medieval age, there was a great change that came about through the invasion of Bakhtiyar Khilji in 1204. He was a general of the Delhi Sultanate. His conquest marked the start of Islamic rule in Bengal. At first, the region was made into a province of Delhi, but its distance from the imperial centre also saw governors declare independence.

This tendency saw the founding of independent sultanates. The Iliyas Shahi Dynasty, in particular, is noted for uniting the area under the title of “Shah of Bangalah. A brief but important break in the trend came with the rise of the Hindu Raja Ganesha Dynasty in the early 15th century, which was followed by a return to Muslim rule. That period is characterised by what may be called a unique synthesis of cultures, which saw local traditions mix with Islamic elements.
The Mughal Annexation
In the 16th century, the Mughals’ arrival, along with the interregnum of the Suri dynasty, which was founded by Sher Shah Suri, took place. Also, we see the last independent Afghan dynasty, the Karranis, attempt to push back Mughal expansion, which they did not succeed in. By 1576, after the defeat of Daud Shah Karrani, Bengal fell into the hands of the Mughals. It became a Subah (province) under the rule of Subahdars, which the emperor would put in charge; thus, Bengal entered a new age of great wealth as one of the Mughal Empire’s richest provinces.
From early tribal rule through to great imperial states, the history of the Bengal Kingdom is a record of what made the region a force in the large-scale history of the South Asian region.