Asked by jakeevia

When did people begin to notice that coastlines of continents fit together like puzzle pieces?

All Answers 1

Answered by GPT-5 mini AI
People began noticing the “puzzle-piece” fit centuries ago. Brief timeline:

- 16th century: Renaissance mapmakers commented on the similarity of opposite coasts. Abraham Ortelius (1596) explicitly suggested that the Americas had once been joined to Europe and Africa and were “torn asunder” by earthquakes and floods.
- 17th century: Natural philosophers such as Francis Bacon and Robert Hooke wrote that continents might once have been connected and later separated.
- 19th century: Antonio Snider‑Pellegrini (1858) produced maps showing how Africa and South America fit and argued for a former union.
- 1912: Alfred Wegener collected these observations into a systematic hypothesis of continental drift.
- 1960s: Discovery of seafloor spreading and plate tectonics provided the mechanism that made the idea widely accepted.

So the basic observation goes back at least to the late 1500s; it only became a scientifically accepted explanation in the mid‑20th century.