Why was the deed of cession signed when Fiji was ceded to Great Britain?

Seru Cakobau ruled the short lived Kingdom of Fiji (1871-1874) as Tui Viti, and the title became synonymous with him. In 1854, as Tui Viti, he attended a court conducted by Captain Denham of HMS Herald into Cakobau's alleged misdeeds against the Europeans. The usage of the title brought both advantages and disadvantages to the holder. Advantages in that it allowed Cakobau to deal with the Europeans and control the new wealth and technology they brought with them and disadvantages in being held responsible for the actions of Fijians beyond his realm of control. It was the latter in tandem with his claims to the title and European claims for monetary compensation. How ever he could not pay the compensation so he had no choice but was to ceed Fiji to Great Britain.