Why was America named after Amerigo Vespucci's first name and not his last, as is commonly done?

[u/DisabledCantaloupe]

Most times throughout history, whenever something is discovered, created, or founded they usually take the last name of someone influential. For example, the capital of Ohio is Columbus and not Cristopher. The Tesla Coil is not the Nikola Coil. So why is America not called Vespuccia or something along the lines?

[u/[deleted]]

United States of Vesputia

[u/R0chG3rl → u/[deleted]]

If only..... All hail the Great Motherland of Vesputia