I Want Everyone's Opinion on This...

[Weltall]

It was called the Age of Enlightenment because there was a significant period of social, economic, political, and scientific advancement within it. It's a fitting name, though in my opinion calling it "An age of Enlightenment" is more appropriate than "The Age of Enlightenment", since the 20th Century was far more important in that regard.

http://mars.wnec.edu/~grempel/courses/wc...nment.html