The geographical position of the USA, the UK and Australia is

Great Britain and Australia are washed by the ocean and seas from all sides. 3/4 of the territory of the USA is washed by the ocean.
Severe draughts happen in Australia and its sunny most of the year. In Britain the climate is mild and there is a steady rainfall throughout most of the year. In the USA southern parts have warm temperatures year round and northern have very cold winters.
Much of the land is a desert in Australia. Britain consists for the most part of plains and hills; in the north and west mountaineous areas are found. In the USA almost every type of landscape is presented.