What are the 3 main groups make up Oceania and what is the function of each?

The three main groups that make up Oceania are Micronesia, Melanesia, and Polynesia. Micronesia consists of small islands and atolls, Melanesia is known for its diverse cultures and languages, and Polynesia is characterized by its larger islands and widely spread out territories. Each group has its own unique cultural traditions, languages, and societal structures.