Was Caesar was the pseudonym chosen by authors of federalists?

No, "Caesar" was not a pseudonym used by the authors of the Federalist Papers.

The Federalist Papers were written under the pseudonym Publius. This was a Roman name, chosen to evoke the spirit of Roman republicanism and the strength of the Roman Republic.

The three main authors of the Federalist Papers were:

* Alexander Hamilton

* James Madison

* John Jay

They wrote anonymously to avoid any potential bias or influence on public opinion due to their political affiliations.