Country	Action	Action Date	Effective Date
Johore	Accession	28/10/1916
Kedah	Accession	28/10/1916
Kelantan	Accession	28/10/1916
Perlis	Accession	28/10/1916
SIAM	Signature	28/10/1916
Trenganu	Accession	28/10/1916
UNITED KINGDOM	Signature	25/10/1916