The Age of Exploration: Chapter 10, Exercise 1 — Possible Solution
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EXAMPLE: DA GAMA, 1498 (from Chapter 2 unless noted)
- Fleet sails round Africa to India after a long voyage without a fix
  (Chapter 2, with the dead-reckoning caution from Chapter 5).
- Portuguese head start following Prince Henry's promotion of the caravel.
- Tordesillas gave eastern lands to Portugal (Chapter 3).

KEY POINT
Each row needs a chapter reference, and any link between rows that a source
does not state must be labelled as your own inference.