official historian and author of "Ain-i-Akbari" Abul Fazl refers to Patna as a flourishing centre for paper, stone and glass industries. He also refers to the high quality of numerous strains of rice grown in Patna, famous as Patna rice in Europe.
By 1620, the city of Patna was the great entrepot of northern India, "the largest town in Bengal and the most famous for trade". This was before the founding of the city of Calcutta. Mughal Emperor Aurangzeb acceded to the request of his favourite grandson, Prince Muhammad Azim, to rename Patna as Azimabad, in 1704 while Azim was in Patna as the subedar. However, very little changed during this period other than the name. With the decline of the Mughal empire, Patna moved into the hands of the Nawabs of Bengal, who levied a heavy tax on the populace but allowed it to flourish as a commercial centre. The mansions of the Maharaja of Tekari Raj dominated the Patna river front in 1811-12.
BRITISH EMPIRE
During the 17th century, Patna became a centre of international trade. In 1620, the English East India Company established a factory in Patna for trading in calico and silk. Soon this became a trading centre for saltpetre. Francois Bernier, in Travels in the Mogul Empire (1656–1668), says "...a prodigious quantity of saltpetre was imported from Patna. It was carried down the Ganges with great facility, and the Dutch and English send large cargoes to many parts of the Indies, and to Europe". This trade encouraged other Europeans, principally the French, Danes, Dutch and Portuguese, to compete in the lucrative business. Peter Mundy, writing in 1632, described Patna as "the greatest mart of the eastern region". After the decisive Battle of Buxar of 1764, Patna fell into the hands of the East India Company, which installed a government. It was ruled during the years of British India by a series of governors, including Rahul Gunderjaharagand.
In 1912, when the Bengal Presidency was partitioned, Patna
