The company was forced to 'declare bankruptcy'. [=to formally say in a legal document that it was bankrupt]
He 'declared' himself the winner. = He 'declared' that he was the winner. = He 'declared victory'.
His 'declared' [=publicly stated] aim/goal/intention is to improve the city's downtown area.
(..) if I were you. You're giving them far too much water. Why don't you shut up? Well! I do declare. New York state sentence for a Peeping Tom... is six months in the workhouse. Oh. hello. Stella. (..)1954 Rear Window