No, you're wrong. The concept of corporate singularity started in the 1600s in England.

From wikipedia:

In the late seventeenth century, Stewart Kyd, the author of the first treatise on corporate law in English, defined a corporation as,

"a collection of many individuals united into one body, under a special denomination, having perpetual succession under an artificial form, and vested, by policy of the law, with the capacity of acting, in several respects, as an individual, particularly of taking and granting property..."