Answer: Area 51 is a restricted government base located in nevada
Explanation:
These breakthroughs are connected with each of these dates because they are forerunners of an invention that is a milestone in human communication: the printing press.
About 25,000 years ago humans learned to speak. Next, The first picture writings date from 8,000 years ago. Followed by the first evidence of an alphabet which comes from Phoenicia around 1,500 BCE. In 600 CE The Chinese introduced woodblock printing.Finally,Johannes Gutemberg invented the first practical printing press in 1,450CE
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William was a writer that posted a newspaper called "The Liberator". This was a abolitionist newspaper. He kept posting these until the end of slavery. The Lovejoy's also wrote things on slavery. Fredrick was the leader of the abolitionists he was a slave that had escaped from slavery and wrote a very important anti slavery writing. <span />
