Professor leeds asked his students to sign a petition for a community center. later, he asked the students who signed the petition if they would come to the center and tutor a child. professor leeds has just used what technique to get the students to ?

Foot-in-the-door or as known for short “FITD” technique is a compliance strategy that goes for getting a man to consent to a substantial demand by having them consent to an unobtrusive demand first. The foot-in-the-door strategy succeeds attributable to a fundamental human reality that social scientists call "successive approximations".

unless they converted, many non-christians (mainly jews and muslims) were persecuted

can you explain it better