What is the effect of zeus and ares intervening in the battle

I am going to take a shot in the dark here.  If you have read the Iliad as well as other myths, you will that Greek gods often favor a certain side and would sometimes enter the conflict so that they either help  them be victorious or save them in times of peril.

its confident and professional

the sentence that avoid faulty coordination is:

culture, which is well represented in philadelphia, plays a major role including theatre, music, and the visual arts.  

faulty coordination occurs when the writer gives equal importance two different ideas (clauses) which in fact are not equivalent. in order to correct a misplaced clause or idea, the writer can place less important or emphatic ideas in a relative clause as in the previous sentence.