▁based ▁in ▁Buff alo . ▁ ▁Marine ▁Mid land ▁Bank ▁became ▁a ▁national ▁bank ▁once ▁again ▁in ▁early ▁ 1 9 8 0 . ▁As ▁it ▁entered ▁the ▁ 1 9 8 0 s , ▁assets ▁were ▁close ▁to ▁$ 2 0 ▁billion . ▁ ▁H SB C ▁In ▁ 1 9 8 0 , ▁The ▁Hong k ong ▁and ▁Shang hai ▁Bank ing ▁Corporation ▁acquired ▁a ▁ 5 1 ▁percent ▁cont rolling ▁interest ▁in ▁Marine ▁Mid land ▁Corporation . ▁By ▁then , ▁it ▁was ▁the ▁ 1 3 th ▁largest ▁commercial ▁bank ▁in ▁the ▁United ▁States , ▁with ▁about ▁ 3 0 0 ▁bank ing ▁offices ▁across ▁New ▁York ▁and ▁about ▁ 2 5 ▁offices ▁in ▁foreign ▁countries . ▁H SB C ▁acquired ▁full ▁ownership ▁in ▁ 1 9 8 7 . ▁▁ ▁In ▁ 1 9 8 3 , ▁Marine ▁Mid land ▁Bank ▁acquired ▁Car roll ▁Mc En te e ▁& ▁McG in ley ▁( now ▁H SB C ▁Sec ur ities ▁( USA )), ▁a ▁New ▁York - based ▁primary ▁deal er ▁in ▁US ▁government ▁se cur ities . ▁In ▁ 1 9 9 4 , ▁Marine ▁Mid land ▁acquired ▁Spect rum ▁Home ▁Mort g age , ▁which ▁operated ▁in ▁eight ▁states . ▁Then ▁in ▁ 1 9 9 5 , ▁Marine ▁acquired ▁United ▁Northern ▁Federal ▁Sav ings ▁Bank , ▁with ▁branches ▁in ▁Wat ert own ▁and ▁Low ville , ▁New ▁York . ▁Marine ▁Mid land ▁also ▁acquired ▁The ▁Hong k ong ▁and ▁Shang hai ▁Bank ing ▁Corporation ' s