Between the first and fifth centuries AD, Bantu-speaking peoples migrated to present-day Mozambique from farther north and west. Northern Mozambique lies within the monsoon trade winds of the Indian Ocean. Between the 7th and 11th centuries, a series of Swahili port towns developed there, which contributed to the development of a distinct Swahili culture and language. In the late medieval period, these towns were frequented by traders from Somalia, Ethiopia, Egypt, Arabia, Persia, and India.