Ancient Science

Why are Vedas linked to Hindu religion?

Veda or the vedas are older or ancient than all the religions, it is even more ancient than Hinduism.

Foundation of the hinduism or hindu religion.

The foundation text of Hindu religion is Veda. Hindu religion considers the Vedas as its authentic religious texts. 

constituting the earliest collection of Indian scriptures, which codified the ideas and practices of the Vedic religion and laid the foundation of classical Hinduism. These were probably composed between 1500 and 700 BC, and contain hymns, visions, and guidance on ritual.
The teachings of Hindu religion come from the Vedas.
Connection of Vedas with Hindu religion.
Why are Vedas called Indian scriptures?
Veda is made up of four Vedas. When we talk about the word Veda, it means four Vedas.