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Battle of Antietam, Sept. 17, 1862, lithograph by Kurz and Allison, circa 1888.

9 Questions About the American Civil War Answered

Discover

Young boys working in a thread spinning mill in Macon, Georgia, 1909. Boys are so small they have to climb onto the spinning frame to reach and fix broken threads and put back empty bobbins. Child labor. Industrial revolution

The Rise of the Machines: Pros and Cons of the Industrial Revolution

A Factory Interior, watercolor, pen and gray ink, graphite, and white goache on wove paper by unknown artist, c. 1871-91; in the Yale Center for British Art. Industrial Revolution England

Inventors and Inventions of the Industrial Revolution

African Americans demonstrating for voting rights in front of the White House as police and others watch, March 12, 1965. One sign reads, "We demand the right to vote everywhere." Voting Rights Act, civil rights.

Timeline of the American Civil Rights Movement

Leonardo da Vinci (1452-1519), Italian Renaissance painter from Florence. Engraving by Cosomo Colombini (d. 1812) after a Leonardo self portrait. Ca. 1500.

10 Famous Artworks by Leonardo da Vinci

Orange basketball on black background and with low key lighting. Homepage 2010, arts and entertainment, history and society

The 10 Greatest Basketball Players of All Time

The impeachment trial of Pres. Andrew Johnson, illustration from Frank Leslie's Illustrated Newspaper, March 28, 1868.

What If the President Is Impeached?

Mona Lisa, oil on wood panel by Leonardo da Vinci, c. 1503-06; in the Louvre, Paris, France. 77 x 53 cm.

Why Is the Mona Lisa So Famous?

navigation chart: References & Edit History

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Assorted References

major reference
- In navigation: Sailing instructions
early charts
- In map: The Middle Ages
Mercator projection
- In Mercator projection
wind rose usage
- In wind rose

Article History

Type	Description	Contributor	Date
	Add new Web site: Khan Academy - Navigation charts.	Gloria Lotha	Jul 07, 2017
	Article revised.	The Editors of Encyclopaedia Britannica	Feb 18, 2005
	Article revised.	The Editors of Encyclopaedia Britannica	Feb 08, 1999
	Article added to new online database.	The Editors of Encyclopaedia Britannica	Jul 20, 1998