I am not sure, I am also working on that question in school!!
the most important sacred texts of Hinduism are. 4 Vedas Mahabharata Ramayan Bhagwat Geeta & puarana.
Because Sacred Texts showed people existence of Supreme God. It also showed people laws of Kāma (enjoyment) Moksha (liberation) AND Dharma (righteous living)
Sacred texts helped people to believe in god. and made them more connected with their ancestors rituals.
None. Hinduism and Buddhism share no sacred texts.
The Holy Bible is from God and it helps people to become aware of what He wants for their lives. Religions would be different without scripture because, the information might not get passed on correctly if it was only taught verbally without a text.
The sacred texts and holy scriptures of Zoroastrianism are called the Avesta.
the Aryans have to memorize the poems and hymns because they had to memorize the sacred texts that were important in the culture such as the vedas
There are many quotes which show relevance in daily life. Sacred texts for Hindus were written to show the ideal way of life for a Hindu. Unfortunately you have to find those quotes by your self, because the relevance differs to person from person. Sacred text guide wide variety of people's life style.
It is the Bible.
the qur'an
There are a huge variety of religious inspired texts that are offered by the Sacred Texts website. The site promotes religious tolerance and scholarship, and claims to include many different religions.
There are no "sacred texts" of Satanism; all works and books on Satanism and fairly cheap to purchase on most web-shops.