Why do historians disagree about how Madagascar was first settled?

Historians and scholars debate the initial settlement of Madagascar because, while linguistic and cultural evidence points to Indonesian origins, there is a lack of empirical evidence regarding the specific routes or methods used by the first settlers around 700 CE.123

The controversy centers on two primary theories:

• Direct Migration: Some scholars argue that the first settlers arrived directly from Indonesia, potentially in a single voyage, and that the Bantu-speaking African influences observed in the Malagasy population and culture were introduced later through subsequent migration and the slave trade.2
• Gradual Migration: Other researchers suggest that the island was settled through multiple voyages that followed the coasts of India, the Arabian Peninsula, and Africa. Under this theory, the population was already a blend of Asian and African elements before they reached Madagascar.2

The precise nature of the relationship between these Asian and African cultural features remains a subject of ongoing study and debate.13