▁Min , ▁by ▁which ▁both ▁parties ▁recognized ▁the ▁area ▁as ▁belonging ▁neither ▁to ▁Kon ba ung ▁Bur ma ▁nor ▁to ▁Great ▁Britain . ▁Con sequently , ▁the ▁Kar en ni ▁States ▁were ▁never ▁fully ▁incorpor ated ▁into ▁British ▁Bur ma . ▁The ▁Kar en ni ▁States ▁were ▁recognized ▁as ▁trib ut ary ▁to ▁British ▁Bur ma ▁in ▁ 1 8 9 2 , ▁when ▁their ▁r ul ers ▁agreed ▁to ▁accept ▁a ▁st ip end ▁from ▁the ▁British ▁government . ▁In ▁the ▁ 1 9 3 0 s , ▁the ▁M aw chi ▁Mine ▁in ▁B aw la ke ▁was ▁the ▁most ▁important ▁source ▁of ▁t ung sten ▁in ▁the ▁world . ▁ ▁Independ ence ▁to ▁ 1 9 8 8 ▁ ▁The ▁Constitution ▁of ▁the ▁Union ▁of ▁Bur ma ▁in ▁ 1 9 4 7 ▁proc laimed ▁that ▁the ▁three ▁Kar en ni ▁States ▁be ▁am alg am ated ▁into ▁a ▁single ▁constitu ent ▁state ▁of ▁the ▁union , ▁called ▁Kar en ni ▁State . ▁It ▁also ▁provided ▁for ▁the ▁possibility ▁of ▁se cess ion ▁from ▁the ▁Union ▁after ▁ 1 0 ▁years . ▁ ▁In ▁August ▁ 1 9 4 8 , ▁the ▁Kar en ni ▁leader ▁U ▁Be e ▁H tu ▁Re ▁was ▁assass in ated ▁by ▁central ▁government ▁milit ia ▁for ▁his ▁opposition ▁to ▁the ▁inclusion ▁of ▁the ▁Kar en ni ▁States ▁in ▁the ▁Union ▁of ▁Bur ma . ▁An ▁armed ▁u pr ising ▁swe pt ▁the ▁state ▁that ▁has ▁continued ▁to ▁the ▁present ▁day . ▁ ▁In ▁