The predominant religion of India is Hinduism, and although the approximate date it was founded is unknown, Hinduism was established and founded by the Aryans, who arrived in India around 1500 BC Hinduism can be said to have been inspired by and emerged from the Vedic religion; however, just because the core of Hinduism comes from the Vedic period does not mean that the complex theological thought behind it was also developed during that period. The Vedic period spans from about 1500 to 500 BC, well before Hinduism was fully established. The fundamental idea of ​​Hinduism is that of a Single Supreme Being; this is indicated exclusively in the Vedic religion but is developed later. Another rudimentary idea of ​​Hinduism would be that of dharma, and the idea of ​​dharma expands into the universal idea of ​​karma. These last two concepts are not supported by sources written during the Vedic period. The Vedic era is the period in which the four Vedas were written. There are four Vedas: Rig Veda, Sama Veda, Yajur Veda and Atharva Veda. They include hymns and prayers. Of these four oldest and most sacred texts of India, the Rig Veda is the main source of information on the Rig Vedic civilization. The Rig Veda was written by Aryans who entered the Indus Valley towards the end of the Harappan civilization (which dates back to around 1500 BC). The Vedic era suggests that "the ideas of a culture are reflected in its deities, and the characters of the gods in the Vedas give insight into the values ​​and practices of early Hinduism." (The Worlds of Religion, chapter 9) Although the concept of a single Supreme Being is hinted at in the Vedic period, the concept of Brahma as the ultimate... the center of the card... whose mind is always free from attachment , he who has subdued the mind and senses and who is free from desires, reaches the supreme perfection of freedom from Karma through renunciation”. Although Hinduism can be said to have emerged from the Vedic religion, much of the sophisticated theological thought that characterized it had yet to develop. This proposition is generally valid, substantiated by the ideas of Brahma and karma, which are interconnected since the one life force is within everything and are hinted at in the Vedic religion and further developed after it. However, the term dharma of Hinduism has not been insinuated into the Vedic religion. Overall, Hinduism is not only a unique religion but also a social order; his intellect behind his unique beliefs has mostly emerged from the Vedic period and further explained if not developed primarily after it.