The U.S. Coast Survey map calculated the number of slaves in each county in the United States in 1860. Library of Congress In September of 1861, the U.S. Coast Survey published a large map ...

This map, made by the U.S. Coast Survey in 1861 using census data from 1860, shows the relative prevalence ... it showed the relationship between states’ commitment to slavery and their ...

The importation of slaves was banned in 1808, but the trade continued. In 1860, a United States census counted nearly four million enslaved people living in the country. The Civil War was fought ...

A map from the Library of Congress breaks down the percentage of the slave population in Southern states, according to census data from 1860. Harris County is a light gray, whereas the ...

The population of the United States by the census of the year 1860 was as follows For the Free States..... 18,904,504 For the fifteen Slave States (free)..... 8,280,545 For ...