why does the wombat only live in Australia?

Wombats are native to Australia due to their evolutionary history and adaptation to the continent's unique environments. They are part of a group of marsupials that evolved in isolation after Australia separated from Gondwana millions of years ago. Their specific dietary needs and habitat preferences, such as open forests and grasslands, are well-suited to Australia's ecosystem, limiting their distribution to this region. Additionally, Australia's diverse climates provide the wombat with the resources necessary for survival.