In chicago's southside (and other places), auto mechanics (who work outside the formal sector, without a business license, advertising, or even a garage) will do work for gang members without charging them. in exchange, gang members chase away other mechanics who wish to operate in the area. these auto mechanics have monopoly power; what type of source does it come from?

barrier and network externalities monopoly power

Explanation:

This is platform were other potential competitors in same trade are discouraged from entering into the same market(by gang members) area thereby giving them monopolistic power over the area where their business operates.

its tr3way you already know

the answer is the petition of right.

explanation:

offer to of right, real demand of attesting a benefit against the english crown, the most remarkable point of reference being the petition of right of 1628, which parliament sent to charles i fussing of a movement of oversteps of law. the term also implied the framework (invalidated in 1947) by which a subject could sue the crown.   taking a gander at the frameworks used by maria amidu to make a standard in 2015 commending the 1628 petition of right, which was sent to charles i by the english parliament. at uniquely based law the crown, or the sovereign in his official cutoff, couldn't be sued in the ruler's courts. since the ruler was, really, the superior ace of those courts, coordinating value in them between his subjects, he was not subject to their ward. therefore it transformed into a preparation, at whatever point a subject's certified or individual property had come into the responsibility for ruler or his specialists without legitimate perfect, for the subject to engage the master in chamber for its recovery.