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Unit 1 · Topic 1.3

1.3 Population Growth and Ethnolinguistic Diversity

Between about 1500 BCE and 500 CE, Bantu-speaking peoples spread from West and Central Africa across much of the continent, carrying farming, ironworking and their languages. This Bantu expansion explains why hundreds of related languages are spoken across Central, East and Southern Africa, and it connects to the ancestry of many African Americans.

Key terms

  • Bantu expansion
  • Bantu languages
  • ethnolinguistic diversity
  • migration
  • agricultural innovation

What set the migrations in motion

The story starts in West and Central Africa, in the region of present-day Nigeria and Cameroon. New farming methods and crops, such as yams, grains, and bananas (which first came to Africa from Southeast Asia), let communities grow more food. Better tools, including iron tools in later centuries, helped people clear land and farm it.

More food meant more people. As populations grew, groups moved on to find new land. This set off a long series of migrations by people who spoke Bantu languages, known as the Bantu expansion. It happened slowly, over many generations, roughly from 1500 BCE to 500 CE.

How it spread

The Bantu expansion wasn't a single march. Small groups moved a little at a time, some heading east toward the Great Lakes region and others south through and around the Central African rainforest. Over centuries, Bantu speakers reached East Africa and southern Africa.

Along the way they met people who already lived there, including hunter-gatherer and herding communities. Some of these peoples were absorbed, some were pushed aside, and many traded and intermarried with the newcomers. Bantu speakers spread farming, ironworking and new ways of organizing villages as they went.

A continent of many languages

Africa is home to thousands of ethnic groups and well over a thousand languages, by most counts about a third of all the languages in the world. That rich mix of peoples and languages is what 'ethnolinguistic diversity' means.

The Bantu expansion explains one large piece of it. Today the Bantu family includes hundreds of related languages, such as Swahili, Zulu, Xhosa, Shona and Kikongo. The name comes from a root word for 'people' shared by many of these languages. Not all African languages are Bantu, though. Yoruba, Igbo, Akan and Wolof in West Africa belong to other branches.

Why it matters for African Americans

Most enslaved Africans brought to North America came from West Africa and West Central Africa. West Central Africa, including the Kingdom of Kongo and present-day Angola, is Bantu-speaking country. As a result, a large share of the genetic ancestry of African Americans traces back to communities that speak Bantu languages.

You can even hear echoes in American English. Dictionaries trace 'goober' (a peanut) and 'gumbo' to Bantu languages of West Central Africa.

Worked examples

Try each one yourself first, then open the solution.

  1. Example 1

    Cause and effect from a migration map

    A map shows arrows starting near present-day Cameroon and spreading east and south across Africa between about 1500 BCE and 500 CE. Describe one cause of the movement it shows and one long-term effect.

    Show the solution
    1. Step 1: Identify what the arrows show: the Bantu expansion.
    2. Step 2: Give a cause: farming and tool innovations led to population growth, which pushed groups to seek new land.
    3. Step 3: Give an effect that lasts to today: the spread of Bantu languages.

    Answer: Model answer: The arrows show the Bantu expansion. New crops like yams and bananas and new tools allowed populations in West and Central Africa to grow, so groups moved outward to find farmland. One lasting effect is that hundreds of related Bantu languages, such as Swahili and Zulu, are spoken across Central, East and Southern Africa today.

Common mistakes

  • Treating 'Bantu' as one ethnic group. It's a family of related languages spoken by many different peoples.
  • Describing the expansion as one quick mass migration. It was gradual, over roughly 2,000 years.
  • Assuming every African language is Bantu. Many West African languages, like Yoruba and Akan, are not.

On the exam

  • Be ready to explain the chain: new crops and tools, then population growth, then migration, then language spread.
  • Link this topic to the African roots of African Americans: West Central Africa, a Bantu-speaking region, was a major source of enslaved people.

Connected topics

Videos

  • AP AF AM #3 - 1.3 Population Growth and Ethnolinguistic Diversity

    APUSH SlidesWatch on YouTube (opens in a new tab)

  • The Impact of the Bantu Expansion

    The Gilder Lehrman Institute of American HistoryWatch on YouTube (opens in a new tab)

  • A Griot's History - Africa's Ancient Foundations (1.3-1.4)

    A Griot's History ChannelWatch on YouTube (opens in a new tab)

  • Human migration: sub-Saharan Africa and the Pacific | World History | Khan Academy

    Khan AcademyWatch on YouTube (opens in a new tab)

  • The Bantu Expansion Explained | AP African American Studies Topic 1.3

    APUSH SlidesWatch on YouTube (opens in a new tab)

  • THE MIGRATION THAT RESHAPED AFRICA. APAAS UNIT 1.

    A Griot's History ChannelWatch on YouTube (opens in a new tab)

Check yourself

3 questions on 1.3 Population Growth and Ethnolinguistic Diversity. Pick an answer to see if you got it, and why.

A map of the Bantu expansion shows arrows beginning in the region of today's Nigeria and Cameroon and spreading south and east across Central Africa, down to southern Africa and over to the east coast, between about 1500 BCE and 500 CE. Shading along the routes marks where iron tools and the farming of crops such as yams and bananas spread.

Description written for this practice set of a typical map of the Bantu expansion

Question 1 of 3

The movements shown on the map were driven mainly by

Question 2 of 3

Which of the following is the clearest lasting result of the developments shown on the map?

Question 3 of 3

The Bantu expansion is especially relevant to African American Studies because

0 of 3 answered