Complex sentence: Over the next year the proposal was supported by the Bunbury Chamber of Commerce, South West Zone Development Committee, and Bunbury Municipal Council; reasons for supporting the proposal included "defence, land settlement, relieving the main highway, and tourist advantages".
Split into simpler sentences: Over the next year the proposal was supported by the Bunbury Chamber of Commerce, South West Zone Development Committee, and Bunbury Municipal Council. Reasons for supporting the proposal included "defence, land settlement, relieving the main highway, and tourist advantages".