accede

Short definition from Wiktionary

Verb

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