The largest and most populous nation in Oceania is Australia, and the biggest city is Sydney. The first settlers of Australia, New Guinea, and the big islands simply to the east arrived more than 60,000 years ago. Oceania was first explored by Europeans from the 16th century onward.
Countries fall into four broad categories based on their HDI: very high, high, medium, and low human development. Currently, no Oceanian country falls into the low human development category while Afghanistan, Pakistan and Yemen are the only Asian countries which fall into this category. The index was developed in 1990 by Pakistani economist
Meanwhile, several Oceanic countries, notably Australia and New Zealand, contributed combat and peacekeeping troops to a range of conflicts outside of Oceania. The Castle Bravo mushroom cloud. Nuclear testing in Oceania. Due to its low population, Oceania was a popular location for atmospheric and underground nuclear tests.
According to the United Nations, there are 14 countries in Oceania (Australia) and these vary in size from the largest one like Australia (that is both a continent as well as country) to the smallest one like Nauru.The following is a list providing an overview of sovereign states around the world with information on their status and recognition of their sovereignty . The 206 listed states can be divided into three categories based on membership within the United Nations System: 193 UN member states, [1] 2 UN General Assembly non-member observer states
The list of countries or areas contains the names of countries or areas in alphabetical order, their three-digit numerical codes used for statistical processing purposes by the Statistics Division of the United Nations Secretariat, and their three-digit alphabetical codes assigned by the International Organization for Standardization (ISO). 1 In general, this list of countries or areas .