What new inventions helped spread this culture to all Americans?

The advent of the telegraph revolutionized communication, allowing news and cultural trends to spread rapidly across the country. The expansion of the railroad network facilitated the movement of people and goods, making it easier for cultural exchanges to occur. Additionally, the rise of newspapers and later, radio, played significant roles in disseminating information and popular culture, ensuring that diverse cultural elements reached a wider audience. Together, these inventions helped unify and spread cultural experiences throughout the United States.