What are the "one island, two countries" islands in the world, and where are they?

There is an island between the Atlantic Ocean and the Caribbean Sea. This island is very large, but it is divided into two countries: Haiti and Dominica. One is rich and the other is poor. The border between these two countries is the dividing line between the rich and the poor. ?

This island is called Haiti Island and covers an area of about 76,000 square kilometers. Haiti and Dominica are located in the west of the island. In terms of area, there is little difference between the two countries, but the population of Haiti is less than 9.8 million, while that of Dominica is 10658 million. Haiti has become one of the poorest and backward countries in the world because of years of war. Most Haitians pay less than two dollars a day for telephone calls and have no fixed residence. Another island, Spaniola, is the second largest island in the Caribbean. The island covers an area of over 70,000 square kilometers and has a population of over 20 million. 1492, Columbus first discovered this Indian island in North America. 1502, Spain immigrated a large number of white people to the past and began to colonize the island. /kloc-in the 6th century, Spain established as many as 15 cities here, and its economy and trade were very prosperous. Unfortunately, smallpox brought by Europeans broke out on the island soon after, resulting in the death of more than one million indigenous people on the island, and Spain abandoned the island.

/kloc-At the end of 0/6, rampant pirates occupied the northern part of the island and were gradually taken over by France. /kloc-in the 0/7th century, the island's slaves revolted and established the Republic of Haiti. Soon after, the white-dominated colonists, after failing to merge into the United States, also began to establish their own country, calling Dominica a Republic.