1) The Southern Ocean surrounds Antarctica and is the coldest and least-visited ocean.

2) The ancient city of Rome was founded in 753 BC and went on to become one of the most powerful and influential civilizations in history.

3) The Industrial Revolution, which began in the 18th century, brought about significant changes in agriculture, manufacturing, mining, and transportation.

4) The concept of self-driving cars, or autonomous vehicles, is being actively developed by companies such as Tesla, Google (Waymo), and Uber.