. ▁During ▁this ▁meeting ▁the ▁tar iff ▁rate ▁for ▁the ▁Mang de ch hu ▁H yd rop ower ▁Project ▁plant ▁was ▁also ▁brought ▁under ▁discussion ▁where ▁Lot ay ▁T sh ering ▁tried ▁to ▁raise ▁the ▁rate ▁to ▁Nu . 4 . 2 7 ▁but ▁it ▁ended ▁more ▁towards ▁the ▁Indian ▁Government ' s ▁neg ot iation ▁price ▁of ▁Nu . 4 . 1 . ▁The ▁re vised ▁tar iff ▁rate ▁for ▁the ▁plant ▁was ▁then ▁settled ▁at ▁Nu . 4 . 1 2 . ▁The ▁government ▁of ▁Bh ut an ▁also ▁received ▁Nu . 4 B ill ion ▁for ▁trade ▁facil itation ▁and ▁boost ing ▁economic ▁link ages . ▁ ▁Background ▁For ▁much ▁of ▁its ▁history , ▁Bh ut an ▁has ▁preserved ▁its ▁isol ation ▁from ▁the ▁outside ▁world , ▁stay ing ▁out ▁of ▁international ▁organis ations ▁and ▁maintain ing ▁few ▁bil ater al ▁relations . ▁Bh ut an ▁became ▁a ▁prote ctor ate ▁of ▁British ▁India ▁after ▁signing ▁a ▁treat y ▁in ▁ 1 9 1 0 ▁allowing ▁the ▁British ▁to ▁" guide " ▁its ▁foreign ▁affairs ▁and ▁defence . ▁Bh ut an ▁was ▁one ▁of ▁the ▁first ▁to ▁recogn ise ▁India ' s ▁independence ▁in ▁ 1 9 4 7 ▁and ▁both ▁nations ▁fost ered ▁close ▁relations , ▁their ▁importance ▁augment ed ▁by ▁the ▁an nex ation ▁of ▁Tib et ▁in ▁ 1 9 5 0 ▁by ▁the ▁People ' s ▁Republic ▁of ▁China ▁and ▁its ▁border ▁disput es ▁with ▁both ▁Bh ut an ▁and ▁India , ▁which ▁saw ▁close ▁t