when was the first paper that you just mentioned launched?
In the late 18th century.
The Independent Journal
The Independent Journal, occasionally known as The General Advertiser, was a semi-weekly New York City journal and newspaper edited and published by John McLean and Archibald McLean in the late 18th century. The newspaper's content included contemporary essays and notices.
who were the authors of the federalist and what was the purpose of writing it Alexander Hamilton, James Madison, and John Jay. what were these papers? "The Independent Journal", the "New-York Packet", and the "Daily Advertiser".
wiki:16986508
The Independent Journal [SEP] Introduction
The Independent Journal, occasionally known as The General Advertiser, was a semi-weekly New York City journal and newspaper edited and published by John McLean and Archibald McLean in the late 18th century. The newspaper's content included contemporary essays and notices. "The Independent Journal" is primarily remembered for being one of several newspapers to have initially published "The Federalist" papers – a series of eighty-five articles and essays discussing and advocating the ratification of the United States Constitution, written by John Jay, James Madison and Alexander Hamilton. It became the first newspaper to publish the material when it released the first Federalist essay on October 27, 1787.