Read the clues: transport and changing cities

A three-step method for guessing year and place

1. Start with the setting

   Look beyond the main landmark. A rocky offshore site, a river gorge and an urban street suggest different activities. Write down two possible locations before choosing one.

2. Compare several technologies

   Study transport, power sources and building materials together. One old object may survive into a later period; look for a combination that supports your estimate rather than treating an absence as proof.

3. Separate an era from an event

   Visual clues can support a period without proving an exact year. Identify whether the question concerns construction, opening or first use, then consult the answer and sources to resolve that milestone.