At that time, many legislatures had made it difficult to incorporate in one state and operate in another. As a result, Flagler and Rockefeller and their associates owned dozens of separate corporations, each of which operated in just one state; the management of the whole enterprise was rather unwieldy. In 1882, Flagler and Rockefeller's lawyers created an innovative form of corporation to centralize their holdings, giving birth to the Standard Oil Trust. The "trust" was a corporation of corporations, and the entity's size and wealth drew much attention. Nine trustees, including Rockefeller, ran the 41 companies in the trust. The public and the press were immediately suspicious of this new legal entity, and other businesses seized upon the idea and emulated it, further inflaming public sentiment. Standard Oil had gained an aura of invincibility, always prevailing against competitors, critics, and political enemies. It had become the richest, biggest, most feared business in the world, seemingly immune to the boom and bust of the business cycle, consistently racking up profits year after year.