Rama IV came to welcome Western intrusion in Siam. The king himself and his entourages were actively pro-British. This became evident in 1855 when a mission led by the Governor of Hong Kong, Sir John Bowring, arrived in Bangkok with demands for immediate changes, backed by the threat of force. The king readily agreed to demands for a new treaty, called the Bowring Treaty, which restricted import duties to three percent, abolished royal trade monopolies, and granted extraterritoriality to British subjects. Other Western powers soon demanded and got similar concessions.