To which country does the island of Bioko belong?

Bioko is an island 20 mi (32 km) off the west coast of Africa and the northernmost part of Equatorial Guinea. It covers an area of 779 sq mi (2,017 km²). It's located in the Bight of Biafra portion of the Gulf of Guinea. Its geology is volcanic; its highest peak is Pico Basile at 9,882 ft (3,012 m). Malabo, on the north coast of the island, is the capital city of the country.

In 1472, the Portuguese explorer Fernão do Pó or Fernando Póo was the first European to reach its shores, who baptized it with the name Formosa Flora ("beautiful flower"). Later the name was changed to "Fernando Poo", in honor of its discoverer.

Through the treaties of San Ildefonso in 1777 and El Pardo in 1778, signed between Spain and Portugal, the island passed into Spanish Empire, joining, along with the rest of the Spanish territories of Guinea, the Viceroyalty of the Río de la Plata.

When, starting in 1810, the viceroyalty began to dismember, the island began to be governed by tribal chiefs, Molabo being the first. In 1843, Spain took possession again with the arrival of Juan José Lerena in Santa Isabel (present-day Malabo).

The Bubi clans were unified under the command of Moka who took control of the island. At the beginning of the 20th century, Spain returned and began to exploit cocoa.

After several decades of tension, in 1968 Equatorial Guinea obtained its independence. The island was renamed in honor of the country's first president, Cristino Seriche Bioko.