Unknown to the early coastal visitors from Europe, new and historically pivotal dynasties were beginning to form in southwestern and central Madagascar toward the mid-16th century. Two of them, the Maroserana in the southwest and the Andriana-Merina in central Madagascar, would go on to create vast empires, each with its own apex and decline, between about 1650 and 1896, the year the French annexed Madagascar. While the Maroserana were able to establish their rulers over several south-central peoples, the most outstanding achievement of the dynasty was the creation of two states in western Madagascar, Menabé and Boina. These states later combined into the Sakalava empire, which controlled most of western Madagascar and several adjacent areas deep inland.

The Sakalava were originally a group of warriors who came into contact with the Maroserana before 1660, the year the Maroserana ruler, King Andriandahifotsy, founded Menabé. Ultimately, “Sakalava citizenship” was extended to hundreds of west-coast clans as the original Sakalava warriors and their descendants intermarried and merged with them. A sense of unity also came from religion, as the Maroserana royals upon death became the sacred ancestors of all Sakalava. The Sakalava empire was ultimately weakened by internal power struggles for the throne, by attempts to substitute Islam for the ancestral cult, and, after 1810, by wars with the Merina, a people of the central plateau already on the way to an empire.

The Betsimisaraka confederation, a quasi-state concurrent with the late Sakalava empire, was a brief but successful attempt in the 18th century to unite the coastal peoples of Madagascar’s eastern littoral. Ruled by Ratsimilaho, son of an English pirate and a Malagasy princess, the viable confederation extended along more than 200 miles of coastline. After Ratsimilaho’s death in 1750, the confederation began an abrupt, though prolonged, disintegration.

The Merina kingdom (Imerina) was founded toward the end of the 16th century in the swampy Ikopa valley on the central plateau. Antananarivo (Tananarive) became its capital. In the 18th century Imerina was divided among four warring kings. One of them, Andrianampoinimerina, who reigned 1787–1810, reunited the kingdom about 1797. He gave it uniform laws and administration and sold slaves to the French on the coast, using the guns he got in return to conquer his neighbours, the Betsileo. Under Andrianampoinimerina, Merina society was divided into a ruling noble class (Andriana), a class of commoners (Hova), and a slave class (Andevo). At Andrianampoinimerina’s death, he left his son a single political ambition: “The sea will be the boundary of my rice field” (i.e., of his kingdom).

Early European contacts

Madagascar is mentioned in the writings of Marco Polo, but the first European known to have visited the island was Diogo Dias, a Portuguese navigator, in 1500. It was called the Isle of St. Lawrence by the Portuguese, who frequently raided Madagascar during the 16th century, attempting to destroy the incipient Muslim settlements there. Other European nations also invaded; in 1642 the French established Fort-Dauphin in the southeast and maintained it until 1674. One of their governors, Étienne de Flacourt, wrote the first substantial description of the island. In the late 17th and early 18th centuries, Madagascar was frequented by European pirates (among them Captain William Kidd) who preyed upon shipping in the Indian Ocean.

In the 18th century the Mascarene Islands to the east were colonized by the French with the help of Malagasy slaves. Two attempts at fortified settlements failed—one at Fort-Dauphin by the comte de Modave, the other at the Bay of Antongil by Baron Benyowski. However, French trading settlements prospered, notably at Tamatave.

Formation of the kingdom (1810–61)

Andrianampoinimerina’s son, Radama I (1810–28), allied himself with the British governor of the nearby island of Mauritius, Sir Robert Farquhar. In order to prevent reoccupation of the east coast by the French, Farquhar supported Radama’s annexation of the area by supplying him with weapons and advisers and giving him the title “King of Madagascar.” At the same time, Radama agreed to cooperate with Britain’s new campaign to end the slave trade. In 1817 he captured the east-coast town of Tamatave, from which he launched annual expeditions against the coastal populations. He eventually conquered almost the entire east coast, the northern part of the island, and most of the two large Sakalava kingdoms. Only the south and a part of the west remained independent. The French retained only the small island of Sainte-Marie. In addition, Radama invited European workers, and the London Missionary Society spread Christianity and influenced the adoption of a Latin alphabet for the Malagasy language. Radama died prematurely in 1828; he was succeeded by his widow, Ranavalona I, who reversed his policy of Europeanization. She expelled Christian missionaries and persecuted Malagasy converts. A few Europeans maintained external trade and local manufacture, but eventually they also were expelled. The British and French launched an expedition against Ranavalona but were repulsed at Tamatave in 1845. By the time of her death (1861), Madagascar was isolated from European influence.