It hasn't yet. American culture is still the most influential culture in the world and there haven't been any serious indications of that changing.
What aspects of American culture are dominant has changed over time, but it's still our strongest export. It's the least discussed but most influential aspect of our power in the world.
What aspects of American culture are dominant has changed over time, but it's still our strongest export. It's the least discussed but most influential aspect of our power in the world.