Re: "Common" Gauges around the world

Australia in 1969:- New South Wales is Standard Gauge (4'8 1/2"), South Australia and Victoria are predominatly Broad Gauge (5'3"), South Australia also has some narrow Gauge (3'6") in the north of the state, Queensland, Western Australia and Tasmania are Narrow Gauge (3'6"). Thrown into this dogs breakfast of gauges is the Commonwealth Railways that link SA's broad gauge to WA's narrow gauge, they also have a narrow gauge line the connects to SA's narrow gauge and goes north to Alice Springs in the Northern Territory, another remote narrow gauge line connects Birdum to Darwin in the Northern Territory - confused?
Australia today:- Since 1970 a program of standardisation of all gauges has been in place, all the capital cities are now connected, very little BG is left but WA and Queensland are still mainly NG. Tasmania is an Island state and will always be NG.
New Zealand is also all 3'6" or Cape Gauge.