Final answer:
The Harappa/Mohenjo-Daro civilization, the Aryans, and the Dravidians interconnected through Aryan migration and cultural exchange with Mesopotamia. The Aryan invasion theory and archaeological evidence suggest the Aryans had an impact on the decline of the Harappa/Mohenjo-Daro civilization.
Step-by-step explanation:
The Harappa/Mohenjo-Daro civilization, the Aryans, and the Dravidians interconnected in various ways. The Aryan invasion theory suggests that Aryans migrated into the Indian subcontinent and had an impact on the Harappa/Mohenjo-Daro civilization. The Rigveda, an Indo-European religious text, describes the Aryans attacking the walled cities and forts of the indigenous population, which may include the conquest of Mohenjo-Daro. Additionally, trade and cultural exchange between Harappa and Mesopotamia influenced Indian art and culture.