A business owned by many people but treated by law as one person?

A business owned by many people but treated by law as one person is typically a corporation. In this legal structure, the corporation itself is recognized as a separate entity from its owners (shareholders), allowing it to enter contracts, own property, and be liable for debts independently. This separation provides limited liability protection to shareholders, meaning they are not personally responsible for the corporation's debts beyond their investment. It also facilitates easier transfer of ownership through the sale of shares.