Complex sentence: He became Commodore on the Australia Station in January 1882 and in that capacity announced that, in order to provide support for the local people, the south coast of New Guinea would become a British protectorate.
Split into simpler sentences: He became Commodore on the Australia Station in January 1882. In that capacity he announced that, in order to support the local people, the south coast of New Guinea would become a British protectorate.