North America has been inhabited continuously since approximately 4,000 BC. The earliest inhabitants were nomadic, big-game See more

The period after the American Civil War was marked by increasing intense and pervasive industrialization and successive technological … See more

Agricultural production
In the 1840s, as more and more western states joined the Union, many poor and middle-class … See more

Health care and biotechnology
As in physics and chemistry, Americans have dominated the Nobel Prize for physiology See more

Agriculture
In the 17th century, Pilgrims, Puritans, and Quakers fleeing religious persecution in Europe brought with … See more

In the 20th century, the pace of technological developments increasingly became tied into a complex set of interactions between See more

This section discusses technology, scientific studies, engineering, and overall impact.
Computers and … See more