text: where does "root" as in to cheer originate from in the world of sports?   root [root]  (past root·ed, past participle root·ed, present participle root·ing, 3rd person present singular roots)   1.  support somebody or something noisily:   to cheer, shout, or applaud in support of a contestant or team    2.  lend support to somebody:   to provide support to or be actively in favor of somebody or something     [late 19th century. origin uncertain: perhaps an alteration of rout “to low loudly.”]