When was the roman confederation created?

Answer 1

There never was a Roman confederation.

The term "Roman confederation" or "Italic federation" was coined by the historian Beloch in the late 19th century/early 20th century. It is now outdated and is no longer in use. Beloch used the term to indicate the system of alliances Rome made with other Italic peoples when she gained control over Italy. Several Italic peoples allied with Rome or were forced to form alliances with her. The allies were required to supply Rome with soldiers at their own expense in exchange for protection and for sharing the spoils of war. These soldiers fought in auxiliary troops which supported the Roman legions. The allies supplied some 60% of the military manpower available to Rome. The term is now deemed inappropriate because the Romans made individual alliances with each one of their allies and did not bring them together in a confederation. They did not use this term either.