trading hub connecting ports of the Indian Ocean in the early centuries following human settlement. The written history of Madagascar began with the Arabs, who established trading posts along the northwest coast by at least the 10th century and introduced Islam, the Arabic script (used to transcribe the Malagasy language in a form of writing known as sorabe), Arab astrology and other cultural elements. European contact began in 1500, when the Portuguese sea captain Diogo Dias sighted the island. The French established trading posts along the east coast in the late 17th century.
From about 1774 to 1824, Madagascar gained prominence among pirates and European traders, particularly those involved in the trans-Atlantic slave trade. The small island of Nosy Boroha off the northeastern coast of Madagascar has been proposed by some historians as the site of the legendary pirate utopia of Libertalia. Many European sailors were shipwrecked on the coasts of the island, among them Robert Drury, whose journal is one of the few written depictions of life in southern Madagascar during the 18th century. The wealth generated by maritime trade spurred the rise of organized kingdoms on the island, some of which had grown quite powerful by the 17th century. Among these were the Betsimisaraka alliance of the eastern coast and the Sakalava chiefdoms of Menabe and Boina on the west coast. The Kingdom of Imerina, located in the central highlands with its capital at the royal palace of Antananarivo, emerged at around the same time under the leadership of King Andriamanelo.
Kingdom of Madagascar
Upon its emergence in the early 17th century, the highland kingdom of Imerina was initially a minor power relative to the larger coastal kingdoms and grew even weaker in the early 18th century when King Andriamasinavalona divided it among his four sons. Following a century of warring and famine, Imerina was reunited in 1793 by King Andrianampoinimerina
