History of Madagascar
By the 15th century, Europeans had wrested control of the spice trade from the Muslims. They did this by bypassing the Middle East and sending their cargo-ships around the Cape of Good Hope to India. The Portuguese mariner Diogo Dias became the first European to set foot on Madagascar when his ship, bound for India, blew off course in 1500. In the ensuing two-hundred years, the English and French tried (and failed) to establish settlements on the island.
Merina people
Austronesian people started settling in Madagascar between 200 and 500 CE. They arrived by boats and were from various southeast Asian groups. Later Swahili-Arabs and Indian traders came to the island's northern regions. African slaves were brought to the island's coasts between the 13th and the 18th centuries. The Portuguese traders were the first Europeans to arrive in the 15th century, followed by other European powers.
This influx of diverse people led to various Malagasy sub-ethnicities in the mid-2nd millennium. The Merina were probably the early arrivals, though this is uncertain and other ethnic groups on Madagascar consider them relative newcomers to the island. The Merina people's culture likely mixed and merged with the Madagascar natives named "Vazimba" about whom little is known. According to the island's oral traditions, the "most Austronesian looking" Merina people reached the interior of the island in the 15th century and established their society there because of wars and migrant pressure at the coast. Merina people were settled in the central Madagascar, formed one of the three major kingdoms on the island by the 18th century – the other two being Sakalava kingdom on the west-northwest and Betsimisaraka kingdom on the east-northeast.