The costs for setting up a limited partnership are going to be more than for a partnership because a certificate of limited partnership must be filed with the applicable Secretary of State, and a limited partnership agreement must be executed. Accordingly, there will be filing fees of approximately $250 to $600.
The Justice League of America was created by Gardner Fox during the Silver Age as a spiritual successor to the Golden Age's Justice Society of America, first appearing in Brave and the Bold #28.
The precursor to the Justice League was the Justice Society of America, who first appeared nearly two decades earlier, in All-Star Comics #3 of December 1940. The first appearance of the Avengers as a team was in their self-titled series, in September 1963.