What evidence suggests that the four-group caste system of South Asia was based on encounters with people of different complexions and cultures?  

An airplane starting from rest at one end of a runway accelerates uniformly at 4.0 m/s2 for 15 s before takeoff. What is its takeoff speed? Show that the plane travels along the runway a distance of 450 m before takeoff.

  Around 1200 bce, which of the following was an effect of environmental change in the lands bordering the eastern Mediterranean?  

  Which of the following does the mosaic of the Battle of Issus illustrate about Alexander’s military organization?  

  In what specific ways did the Phoenicians benefit from their location?  

  Which of the following best describes the Jewish response to the Hellenistic culture of the Seleucids?  

  Which of the following formed the basis of trade for Crete with Egypt and the Levant?  

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  Which of the following was a consequence of Homo sapiens’s migration out of Africa between 60,000 and 12,000 bce?  

  Which of the following was essential to Harappan economic power?