Which of the following are not likely to be evidence of United Kingdom's history?

The history of the United Kindgom is full of wars, invasions, revolutions, and interesting rulers. Numerous castles, fortifications, old cathedrals, and ruins are evidence of the kingdom\'s past. The "UK," as it is often called, was once the world\'s most powerful nation. Canada, Australia, India, Pakistan, and even the United States are among nations that used to be controlled by the United Kingdom. It is also the birthplace of the English language. 

There are many remarkable landmarks to see in the United Kingdom such as the Tower of London, Big Ben, Oxford University and the mysterious Stonehenge. Oxford University, founded sometime in the 12th century, is the oldest university in the English speaking world. Many of the United Kingdom\'s former prime ministers attended Oxford. Stonehenge, located near Salisbury, England, is a group of giant standing stones arranged in a circular formation. Archaeologists believe the formations are over 4,500 years old. No one knows exactly what Stonehenge is meant to represent.