Why did baseball become known as the national pastime in the United States?

Baseball became known as the "national pastime" in the United States due to a combination of nationalistic sentiment, its role as a unifying cultural force, and its deep integration into American identity.1

In the 19th century, Americans sought a sport they could claim as exclusively their own to establish cultural autonomy, similar to how other nations had their own traditional games. This desire for a "Native American Sport" was bolstered by a 1907 commission that promoted the myth—based on flimsy research—that Abner Doubleday invented baseball in Cooperstown, New York, in 1839.1

Beyond its origins, baseball served as a "common denominator" in a diverse nation without a long, mythic past. It provided a shared language and set of rituals that connected people across a vast continent. The game’s rhythms reshaped the American calendar, with the World Series becoming a major annual rite. Furthermore, baseball’s integration into literature, music, and everyday metaphors solidified its status as a central element of American life, serving as a "meeting place" for a people otherwise isolated by geography and social differences.1