Final answer:
Baseball is referred to as America's pastime due to its long-standing popularity and cultural significance in the United States.
Step-by-step explanation:
Baseball is referred to as America's pastime because it has been a popular sport in the United States for over a century. It holds a significant place in American culture, with its traditions, history, and values being deeply embedded in society. Baseball's roots can be traced back to the early 19th century, and it has since become a symbol of American identity and nostalgia.
Learn more about Baseball as America's pastime