1) The average person walks the equivalent of three times around the world in a lifetime.

2) The discovery of the Americas by Christopher Columbus in 1492 opened up new trade routes and had a profound impact on world history.

3) The Civil Rights Act of 1964 in the United States outlawed discrimination based on race, color, religion, sex, or national origin.

4) The development of artificial intelligence (AI) has led to advancements in areas such as machine learning, natural language processing, and computer vision.