The Independence Hall Association was founded in 1942 to be the driving force behind the creation of Independence National Historical Park, in Philadelphia, Pennsylvania. In 1995, it created the website that today is called UShistory.org, with over 3 million page views monthly.
This was known as the "iron curtain." It was a term used to describe the boundary in Europe, which formed at the end of WWII and lasted until the ending of the Cold War.