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 knew what she was hiding, then it wouldn't be hidden, would it? - All right. Thank you. - One more! One more! Okay, let's go. Next. Nothing to declare. - Come on through. - Hand check on two. - This your bag, sir? - Yes, it is. - We'll have to hand check it. (..)2006 The Pink Panther