To what extent did Hinduism and Buddhism build off of earlier Vedic religious and social tranditions? in what ways are Hinduism and buddhism similar and different in their conceptions of the path to...

To what extent did Hinduism and Buddhism build off of earlier Vedic religious and social tranditions? in what ways are Hinduism and buddhism similar and different in their conceptions of the path to salvation? what do you see as the reasons for their popularity?

please be explain thoroughly