Oman, which traditionally regards itself as an independent state, has not contemplated joining the federation.
Oman has had experienced considerable British involvement in its affairs since the latter half of the nineteenth century.
By taking over Zanzibar and other areas of East Africa formerly controlled by Oman, Britain had destroyed much of Oman's trade.
The trade loss had created resentment on the part of the Omanis, which groew in the twentieth century when the ruler granted oil concessions to British companies.
The increasing British presence has caused tensions that result in charges of foreign interference in Omani affairs.
Many Omanis blame the Al Said sultan for allowing foreign influence, which they consider detrimental to the religious and cultural life of the sultanate.