What does Claudius do to hamlet?

He arranges to have him killed, and succeeds, even though four other people die as a result.
He does various things. He forbids him from returning to University. He names him heir apparent to the throne. He sends him to England on a diplomatic mission. He plots Hamlet's death three times, but only the second one gets him.
He does various things. He forbids him from returning to University. He names him heir apparent to the throne. He sends him to England on a diplomatic mission. He plots Hamlet's death three times, but only the second one gets him.