Which Oceanian country has Choiseul as one of its provinces?

Solomon Islands is the Oceanian country whose provinces include Choiseul.

Choiseul Province occupies the northwestern part of Solomon Islands and includes Choiseul Island, Wagina, Rob Roy, and smaller islands. Its provincial capital is Taro, a small island settlement off the main island. The province had a population of 30,775 in the 2019 census.

Choiseul Island is also known by its indigenous name, Lauru. Spanish explorer Álvaro de Mendaña encountered it in the sixteenth century, while French explorer Louis Antoine de Bougainville gave it the name Choiseul in 1768, after the French statesman Étienne François, duc de Choiseul.

Choiseul is one of Solomon Islands’ nine provinces, not a separate country or a province of Papua New Guinea. Its location near Bougainville can cause confusion, but the international boundary places Bougainville in Papua New Guinea while Choiseul belongs to Solomon Islands. The island also saw Japanese occupation and a U.S. Marine raid during World War II.