Identify the different groups of people believed to have visited Australia before British colonisation

1. Indigenous Australians: The first group of people believed to have visited Australia before British colonisation are the Indigenous Australians. They are believed to have arrived around 65,000 years ago. This group includes both Aboriginal and Torres Strait Islander peoples.

2. Macassans: The Macassans from Sulawesi (now part of Indonesia) are believed to have visited Australia for centuries before European arrival. They came to the northern parts of Australia for trepang (sea cucumber) which was a valuable commodity in Chinese markets.

3. Portuguese: There is a theory, although not widely accepted, that suggests Portuguese explorers may have visited Australia in the 1520s, about 250 years before the British.

4. Dutch: The Dutch were the first Europeans to have undisputed, documented contact with Australia. In the early 17th century, Dutch explorers charted the western and northern coastlines of Australia, but they made no attempts at settlement.

5. Spanish: There is also a less popular theory that suggests Spanish explorers may have visited Australia before the British. However, there is little evidence to support this claim.

6. Chinese: There are some theories and evidence that suggest Chinese explorers may have visited Australia before the British. This includes ancient Chinese maps and records, as well as the discovery of Chinese coins and artefacts in northern Australia.

Remember, while there is evidence to support the visits of some of these groups, others are more speculative and the subject of ongoing debate among historians.