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10 multiple-choice questions on Sub-Saharan Africa, about 6% of the High School World Geography bank. Every one carries a written rationale.
Sub-Saharan Africa is one of 16 chapters in CoStudy's High School World Geography bank, and it holds 10 of the bank's 170 multiple-choice questions — roughly 6% of the total. That proportion is not arbitrary: chapters follow the certifying body's published exam outline, and the number of questions in each is set by that domain's published weight, so the share of your practice time this chapter takes matches the share of the real exam it accounts for.
Studying by chapter is worth doing once you have a diagnostic score. A single overall percentage tells you whether you are close; it does not tell you which domain is dragging. Working a weak chapter in isolation, and re-testing it in isolation, is the fastest way to move a score that has stalled — and it is why the mock exams in CoStudy report by domain rather than as one number.
3 questions drawn from this chapter, with the full rationale shown — the controlling principle behind the right answer, and why each wrong option tempts and fails.
The Great Rift Valley runs through which region of Africa?
Answer: B — East Africa, from the Red Sea south through Ethiopia, Kenya, and Tanzania to Mozambique
The East African Rift is a continental divergent boundary, home to lakes Tanganyika and Malawi, and the site of hominin fossils.
Which of the following is Africa's most linguistically diverse country, with over 500 languages?
Answer: C — Nigeria
Nigeria has ~500+ languages; Yoruba, Hausa, Igbo are the three largest with English as lingua franca. Ethiopia is also highly diverse — a plausible near-miss.
Which African country is doubly landlocked (only bordered by other landlocked countries)? [Note: none exist, but which is landlocked and surrounded largely by landlocked neighbors?]
Answer: B — Zambia (landlocked, bordered by 8 countries, most of them landlocked)
Zambia is landlocked and surrounded by many landlocked neighbors. Zimbabwe (its southern neighbor) is a classic Zambia/Zimbabwe off-by-one trap.
These are a sample. The full Sub-Saharan Africa chapter runs 10 items with per-chapter progress tracking, on the web and in the iOS app.
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