The region now called Mozambique was an important region in the later phases of the Atlantic slave trade and part of the broader Southeast African slave-trading network along the Indian Ocean and southeastern African coast. Although West and West-Central Africa supplied the largest numbers of enslaved Africans during most of the transatlantic slave trade, Mozambique became increasingly significant in the 18th and 19th centuries, especially after pressures and abolition efforts affected slave trading in other regions.

Present-day Mozambique was part of a wider East and Southeast African trading system that connected the interior of Africa to coastal ports along the Indian Ocean. Portuguese traders and colonial authorities played a major role in organizing and transporting enslaved Africans from this region across the Atlantic, particularly to Brazil and islands in the Indian Ocean.

Important slave-trading ports included Mozambique Island, Quelimane, and Inhambane, which became central export points for enslaved Africans captured from inland regions. These ports were linked to long-distance commercial networks involving African intermediaries, Portuguese merchants, and other foreign traders.

Mozambique’s participation in the slave trade expanded especially during the late 18th and early 19th centuries, when demand for enslaved labor in Brazil increased sharply. During this period, Southeast Africa became one of the major sources of enslaved Africans transported across the Atlantic, even as the trade was declining in some West African regions due to abolition movements and naval suppression efforts.

Today, Mozambique remains an important place of memory connected to the history of slavery and the African diaspora, reflecting both the suffering caused by the slave trade and the enduring cultural links between Africa and the Americas.