Insert one comma to separate the coordinate adjectives.
,
BoomerangsflatangularpiecesofwoodcanbetracedbacktomanyancientcivilizationsKingTutankhamunwhoruledEgyptfrom1332to1323BCEhadaconsiderableboomerangcollectionref_doc_title.
Jumping to level 1 of 1
Excellent!
Now entering the Challenge Zone—are you ready?
