How many Christmas Islands are there in the world?

1. Kiribati Christmas Island is a coral island in the Line Islands in the Central Pacific. At 1°59′ north latitude and 157°30′ west longitude. The largest atoll in the Pacific. The total area is 600 square kilometers, including 363 square kilometers of land area. Population 1,290 (1978). It became a British colony in 1888. It has been used as a nuclear weapons testing base for the United Kingdom and the United States. Coconut cultivation was developed after 1970. It is a stopover on the air route from Hawaii to Tarawa Island. There is an island country in the south-central part of the Pacific called Kiribati. It consists of 3 islands, namely the Gilbert Islands in the west, the Phoenix Islands in the middle and the Line Islands in the east. Christmas Island is one of the three northern islands of the Line Islands. From the map, Christmas Island is one of the smallest islands on earth, but in fact it is the largest lagoon island in the world, covering an area of ??640 square kilometers. 2. Christmas Island, Australia, an island in the Indian Ocean. Australian overseas territories. Area is 135 square kilometers. More than half are Chinese, and the rest are Malays, Europeans, etc. Australian overseas territories. It is located 360 kilometers south of Java Island, at 10°30′ south latitude and 105°40′ east longitude. It covers an area of ??135 square kilometers and has a population of 1960 people (2008). Christmas Island is one of the few areas in the world that is dominated by Chinese, of which 63% are Chinese, 25% are Malays, and 12% are Europeans. The official language is English. The rocky shore is steep, and only Feiyu Bay can accommodate seagoing ships. The forest is dense. Occupied by the British in 1888. Incorporated into Singapore in 1900. Returned to Australia in 1958. There are abundant deposits of apatite, mined jointly by Australian and New Zealand companies. Located 360 kilometers (224 miles) south of Java Island and 1,400 kilometers (870 miles) northwest of Australia, it is administered as an overseas territory of Australia. Covering an area of ??135 square kilometers (52 square miles), it is the top of an undersea mountain. The highest peak on the island is Murray Hill, with an altitude of 361 meters (1,184 feet), located in the west of the island. Flying Fish Cove in the northeast is a major residential area and main port. Richard Rowe, captain of the Thomas, first discovered the island in 1615. On Christmas Day in 1643, William Mynors, captain of the British East India Company, named it after him. In 1887, personnel aboard the British Royal Navy warship "Egeria" collected soil and rock samples from the island. British naturalist John Murray tested the samples and found that they were almost pure lime phosphate. The island was annexed by the British in 1888, and George Clunies-Ross of the Cocos Islands took the lead in setting up a stronghold in Flying Fish Bay. In 1891, Clunis-Ross and Morey obtained a 99-year lease for phosphate mining and logging on the island. Six years later, the rights were transferred to the Christmas Island Phosphate Mine Co., Ltd., with most of the company's shares owned by the former Tenant owned. In 1900, the island was incorporated into the British Straits Settlements with its capital in Singapore. During World War II, the island was occupied by the Japanese. In 1948, the New Zealand and Australian governments acquired the shares and property of the Christmas Island Phosphate Mine Company. The Christmas Island Phosphate Mine Commission was established in 1949 to represent both governments in matters of mining and shipping. The island was incorporated into Australia in 1958. A series of undulating slopes and mesas descend from the central plateau. At the end of the slope is the coast, most of which are steep cliffs with a height of more than 20 meters (65 feet). There are also sandy beaches and coral reefs along the coast. The island contains valuable phosphate deposits. The tropical rainy season is from December to June to April, with an average temperature of 27℃ (81℉) and little seasonal variation. The average annual rainfall is 2,670 mm (113 inches). Most of Christmas Island is covered by tropical rainforest, and its animals include a large number of seabirds, small reptiles, ground crabs and insects. Fresh water used by the islanders comes from springs and wells. Most of the western end of the island is designated as a national park. Only 1/3 of the residents are women; 63% of the total population is Chinese, 25% are Malay workers mainly recruited from Malaysia, Singapore and the Cocos Islands, and there are also Australian managers. Traditionally, most of the island's residents have been employees of the Christmas Island Phosphate Mining Company Limited, a company owned by the Australian government. The island's economy depends almost entirely on phosphate mining, with the minerals shipped to Australia and New Zealand, but this changed in the early 1990s. Profitable phosphate mines have almost been exhausted, and other economic activities such as tourism have yet to be developed. There is small-scale food crop cultivation and fishing, but most of the food is imported. The Governor-General of Australia appoints a Christmas Island administrator, who is responsible for secretarial, education, postal, police, communications and port tax work. A locally elected council is the political representative of the islanders. Almost all island residents are Australian citizens or residents under the terms of the Christmas Island Act and the Citizenship Act. A small hospital on the island provides medical and dental treatment. Primary and secondary education is based on the Australian Curriculum. There is an airport on the island with weekly charter flights; there are roads and a railway used to transport phosphate from the southern plateau to Feiyu Bay Port.