Samoa
Britain also sent troops to protect British business enterprise, harbour rights, and consulate office. This was followed by an eight-year civil war, during which each of the three powers supplied arms, training and in some cases combat troops to the warring Samoan parties. The Samoan crisis came to a critical juncture in March 1889 when all three colonial contenders sent warships into Apia harbour, and a larger-scale war seemed imminent. A massive storm on 15 March 1889 damaged or destroyed the warships, ending the military conflict.

Q: How many contenders were vying for power in the war?
three