First of all, it wasn't an Aryan Invasion. It was a Migration. The Aryans moved north from their homeland in South India around 40,000 BCE, according to DNA research. Some of them left Pakistan and settled in Iran and started the Persian Empire and Zoroastrianism. We know this because of glossochronology, which is a technique used by linguists to study languages and how they change over time. We know that Sanskrit was a descendant of the original Aryan language because of how similar certain words are across India, Iran, and even ancient Greece.
If you look at Zoroastrianism, you will see a lot of similarities with Hinduism, such as worship of fire. Similar structures of Gods and their holy books are called Avesta, whereas Hindus call them Vedas. Similarly, Hindus have Kathas, they have Gathas. During their migration north through India, the Aryans composed the Vedas.
Some Aryans left India gradually. Some remained in Pakistan and northwest India and built the Indus Valley Civilization.
rigveda
that its a great and organized civilization.
The Aryans overthrew the stone forts of the Dasyu and drove them into retreat, in very ancient times.
Harappan civilization is more ancient than the Aryan civilization. Definitely they would have practiced a different religion than the vedic Hindu religion. It is similar to the Sumerian civilization. One cannot find out the religion practised by them as no texts are available. Any speculation can only be a guess.
The Aryan society didn't move their herds of cattle when they travel ,also they would stop at a place build a civilization unlike the Harappans.
The invasion of the Aryan influence was both a positive and negative one in regards to the development and civilization of the Mohenjo-Daro. It brought Hinduism to the region, but it also opened up the land to attacks from other religious groups.
The Aryan invasion as the cause of breakup of the Harappan civilization.
Aryan invasion theory
Update on the Aryan Invasion Debate was created in 1999.
The early civilization that used Sanskrit writing was the ancient Indus Valley civilization. Sanskrit, which is an ancient Indo-Aryan language, was used to write religious texts and literature in this civilization.
rigveda
that its a great and organized civilization.
The ISBN of Update on the Aryan Invasion Debate is 81-86471-77-4.
Hinduism was Mainly product of aryan invasion. Dravidian had very different rituals than of today's Hindu Society. This shows that dominating aryans influenced Hindu beliefs Heavily.
dravidians
The Aryans overthrew the stone forts of the Dasyu and drove them into retreat, in very ancient times.
Not country! Civilization is Aryan!