How did the entrance of the Aryans into the weakened Indus Valley differ from that of other pastoralist migrations into Egypt, Mesopotamia, or Anatolia?

Aryan did not immediately establish a large territorial state

Explanation:

Aryan are pastoralist nomads from Europe and Asia who migrated to India and finally settled, they slowly take over India unlike other pastoralist migrations into Egypt, Mesopotamia, or Anatolia who keep moving with warlike tendency.The Aryans adopted the agricultural skill of the people of Indus Valley and the people adopted the new comers' language

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i also see that they are way better humans.

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation: