He was an escaped slave who taught himself to read and write, and became one of the most accomplished public speakers of his day. He worked, spoke and wrote tirelessly on the topics of slavery and human rights. Two of his sons served honorably in the United States Army during this country's Civil War. By the way, his name was spelled "Douglass" - you left off one "s"...

Why did NY's population suffer such a radical decrease in the 1970's?

I was reading New York's population history, and noticed that its number dropped by 823 223 people between 1970 and 1980. Why is that? What happened that lead to this decrease?

last name during medieval time?

Someone told me back in medieval times people didn't have last name is the true if so how did they address each other? Thanks for the help.