▁in ▁Pat na ▁that ▁is ▁famous ▁as ▁Pat na ▁rice ▁in ▁Europe . ▁ ▁The ▁Jag ird ar ▁of ▁Mo hr amp ur ▁ruled ▁over ▁the ▁city ▁of ▁Pat na . ▁Pat na ▁was ▁the ▁most ▁important ▁city ▁in ▁the ▁eastern ▁part ▁of ▁India ▁after ▁Bur dh wan ▁and ▁served ▁as ▁the ▁capital ▁of ▁Bi har ▁Sub ah . ▁M ug hal ▁Emperor ▁Aur ang z eb ▁acc eded ▁to ▁the ▁request ▁of ▁his ▁favour ite ▁grand son ▁Prince ▁Muham ad ▁Az im ▁to ▁rename ▁Pat na ▁as ▁Az im abad , ▁in ▁ 1 7 0 4 ▁while ▁Az im ▁was ▁in ▁Pat na ▁as ▁the ▁sub ed ar . ▁However , ▁other ▁than ▁the ▁name , ▁very ▁little ▁changed ▁during ▁this ▁period . ▁ ▁The ▁N aw abs ▁▁ ▁With ▁the ▁decl ine ▁of ▁M ug hal ▁emp ire , ▁Pat na ▁moved ▁into ▁the ▁hands ▁of ▁the ▁N aw abs ▁of ▁Beng al , but ▁with ▁the ▁span ▁of ▁time ▁the ▁city ▁was ▁taken ▁over ▁by ▁the ▁j ag ird ars ▁who ▁then ▁became ▁the ▁self ▁declared ▁N aw abs . ▁The ▁N aw abs ▁of ▁Beng al ▁lev ied ▁a ▁heavy ▁tax ▁on ▁the ▁popul ace ▁but ▁allowed ▁it ▁to ▁fl our ish ▁as ▁a ▁commercial ▁centre . ▁During ▁the ▁ 1 7 th ▁century , ▁Pat na ▁became ▁a ▁centre ▁of ▁international ▁trade . ▁ ▁The ▁British ▁started ▁with ▁a ▁factory ▁in ▁Pat na ▁in ▁ 1 6 2 0 ▁for ▁the ▁purchase ▁and ▁storage ▁of ▁cal ico