Dominica ( or (listen); Kalinago: Waitu kubuli; French: Dominique; Dominican Creole French: Dominik), officially the Commonwealth of Dominica, is an island country in the Caribbean. The capital, Roseau, is located on the western side of the island. It is geographically situated as part of the Windward Islands chain in the Lesser Antilles archipelago in the Caribbean Sea. Dominica's closest neighbours are two constituent territories of the European Union, the overseas departments of France, Guadeloupe to the northwest and Martinique to the south-southeast. Dominica comprises a land area of 750 km2 (290 sq mi), and the highest point is Morne Diablotins, at 1,447 m (4,747 ft) in elevation. The population was 71,293 at the 2011 census.The island was settled by the Arawak arriving from South America in the fifth century. The Kalinago displaced the Arawak by the 15th century. Columbus is said to have passed the island on Sunday, 3 November 1493. It was later colonised by Europeans, predominantly by the French from the 1690s to 1763. The French imported enslaved people from West Africa to Dominica to work on coffee plantations. Great Britain took possession in 1763 after the Seven Years' War, and it gradually established English as its official language. The island gained independence as a republic in 1978.

Dominica has been nicknamed the "Nature Island of the Caribbean" for its natural environment. It is the youngest island in the Lesser Antilles, and in fact it is still being formed by geothermal-volcanic activity, as evidenced by the world's second-largest hot spring, called Boiling Lake. The island has lush mountainous rainforests, and it is the home of many rare plants, animals, and bird species. There are xeric areas in some of the western coastal regions, but heavy rainfall occurs inland. The Sisserou parrot, also known as the Imperial amazon and found only on Dominica, is the island's national bird and featured on the national flag, making it one of the only two sovereign nations whose official flag features the color purple. The country is a member of the Commonwealth of Nations, the United Nations, the Organization of American States, the Organisation internationale de la Francophonie, the Organisation of Eastern Caribbean States and the Non-Aligned Movement.

Christopher Columbus (; born between 25 August and 31 October 1451, died 20 May 1506) was an Italian explorer and navigator who completed four voyages across the Atlantic Ocean, opening the way for the widespread European exploration and colonization of the Americas. His expeditions, sponsored by the Catholic Monarchs of Spain, were the first European contact with the Caribbean, Central America, and South America.

The name Christopher Columbus is the Anglicisation of the Latin Christophorus Columbus. Scholars generally agree that Columbus was born in the Republic of Genoa and spoke a dialect of Ligurian as his first language. He went to sea at a young age and travelled widely, as far north as the British Isles and as far south as what is now Ghana. He married Portuguese noblewoman Filipa Moniz Perestrelo and was based in Lisbon for several years, but later took a Castilian mistress, Beatriz Enríquez de Arana; he had one son with each woman.

Largely self-educated, Columbus was widely read in geography, astronomy, and history. He developed a plan to seek a western sea passage to the East Indies, hoping to profit from the lucrative spice trade. Following Columbus's persistent lobbying in multiple kingdoms, the Catholic Monarchs Queen Isabella I and King Ferdinand II agreed to sponsor a journey west. Columbus left Castile in August 1492 with three ships and made landfall in the Americas on 12 October, ending the period of human habitation in the Americas now referred to as the pre-Columbian era. His landing place was an island in the Bahamas, known by its native inhabitants as Guanahani. He subsequently visited the islands now known as Cuba and Hispaniola, establishing a colony in what is now Haiti. Columbus returned to Castile in early 1493, bringing a number of captured natives with him. Word of his voyage soon spread throughout Europe.

Columbus made three further voyages to the Americas, exploring the Lesser Antilles in 1493, Trinidad and the northern coast of South America in 1498, and the eastern coast of Central America in 1502. Many of the names he gave to geographical features, particularly islands, are still in use. He also gave the name indios ("Indians") to the indigenous peoples he encountered. The extent to which he was aware that the Americas were a wholly separate landmass is uncertain; he never clearly renounced his belief that he had reached the Far East. As a colonial governor, Columbus was accused by his contemporaries of significant brutality and was soon removed from the post. Columbus's strained relationship with the Crown of Castile and its appointed colonial administrators in America led to his arrest and removal from Hispaniola in 1500, and later to protracted litigation over the perquisites that he and his heirs claimed were owed to them by the crown.

Columbus's expeditions inaugurated a period of exploration, conquest, and colonization that lasted for centuries, helping create the modern Western world. The transfers between the Old World and New World that followed his first voyage are known as the Columbian exchange. Columbus was widely celebrated in the centuries after his death, but public perception has fractured in the 21st century as scholars have given greater attention to the harms committed under his governance, particularly the beginning of the depopulation of Hispaniola's indigenous Taínos caused by mistreatment and Old World diseases, as well as by that people's enslavement. Proponents of the Black Legend theory of historiography claim that Columbus has been unfairly maligned as part of a wider anti-Catholic sentiment. Many places in the Western Hemisphere bear his name, including the country of Colombia, the District of Columbia, and British Columbia.