Which of the following people groups were of indo-european origin? mycenaeans aryans egyptians sumerians hittites

The Hittites, Aryans, and Mycenaean Greeks were among the Indo-European groups.

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answer; ///i believe the correct answer is (b) the writing of the ancients who lived in india after the indus valley inhabitants died out;

industry had made the u.s. the richest nation in the world at this time. the second industrial revolution caused growth in industry and transportation, which allowed increased trade between nations.