In the past few days, the armed coup d'état in Guinea, a small West African country, has suddenly attracted the attention of people around the world. West Africa is far away from the country, not because of some emergency, many people do not know that there is this country. In fact, there are also countries related to Guinea, as mentioned in the title, Guinea-Bissau, Equatorial Guinea, Papua New Guinea, etc. The common feature of these four countries is that they are all coastal and colonized. French Guinea became Guinea, Spanish Guinea became Equatorial Guinea, Portuguese Guinea became Guinea-Bissau, and In Australia Papua New Guinea became Papua New Guinea.
Guinea, Guinea-Bissau, Equatorial Guinea these 3 countries are in western Africa.

The Republic of Guinea, or Guinea, which had recently undergone a military coup, is located on the west bank of West Africa, bordering Guinea-Bissau, Senegal and Mali to the north, Côte d'Ivoire to the east, Sierra Leone and Liberia to the south, and the Atlantic Ocean to the west. Guinea is one of the least developed countries. It has a population of about 13 million and a per capita GDP of just over $1,100. More than 85 per cent are Muslims and the security situation is not very good.
Guinea-Bissau is relatively small, with a land area of just over 36,000 square kilometers and a population of about 2 million, making it one of the most underdeveloped countries.
Equatorial Guinea is located in the central and western regions of Africa, with an area of about 28,000 square kilometers and a population of about 1.5 million. Equatorial Guinea used to be very poor and very poor, and immediately after the discovery of oil in the sea in 1996, it immediately broke away from the ranks of poor countries, and in recent years, the per capita GDP has been about 10,000 US dollars, which is relatively rich in Africa. He was a non-permanent member of the United Nations for two years, beginning in 1998. When we worked in Africa, we still envied our colleagues who worked in Equatorial Guinea, because they did not need to finance projects with the government, and the government paid directly, saving a lot of money.
Papua New Guinea is the second largest country in Oceania, located in the southwest of the Pacific Ocean and north of Australia, mainly covering the eastern half of the island of New Guinea and the nearby Bismarck Islands, Bougainville Island and other about 600 large and small islands. The name of the country consists of two parts: Papua and New Guinea. Papua New Guinea has an area of 462,840 square kilometers and a population of about 10 million, making it one of the less developed countries.
The above is a brief introduction to these countries, I hope to help you.