Is Ethereum a US company?

I'm curious to know, is Ethereum actually a company based in the United States? Or is it something different entirely? I understand that Ethereum is a decentralized platform that runs smart contracts, but I'm not clear on its legal structure and whether it's tied to a specific country. Can you clarify this for me? Is there any connection between Ethereum and the US government or regulatory bodies? I'm just trying to get a better understanding of the organization behind this revolutionary technology.