|
|
|
Distribution of glaciers in North America (a) in the late twentieth century, and (b) 18,000 years ag
A set of tie stalls in an 18th century stable
A nineteenth-century Japanese portrait of Commodore Matthew Perry, who “opened up” Japan in 1854.
The Black Death spread over much of Europe in a three-year period in the middle of the fourteenth ce
Medicinal leeches on a patient’s neck. Today leeches are sometimes used in microsurgery to prevent b
The Death of Socrates by Jacques Louis David. The eighteenth-century French painter David portrayed ...