Accede

verb

1. To approach; to arrive, to come forward.
2. To give one's adhesion; to join up with (a group, etc.); to become part of.
3. To agree or assent to a proposal or a view; to give way.
4. To come to an office, state or dignity; to attain, assume (a position).
5. To become a party to an agreement or a treaty.