If that is about South
Asia there were major affects on almost every field of life by Buddhism. For
example Hinduism was the prevalent religion in the area before the Buddhism
which had a strong social system based on various classes; Buddhism denied all
of that bringing in more people from low casts (who were considered low cast by
previous cultures). This also brought about a whole transformation in the
society.
Buddhism also preached "Ahinsa", meaning
non-violence (though there have been clashes but the primary teaching was of
non-violence) which affected some parts of Western society as well. Buddhist
architect and art is a whole new chapter in the history of South Asia also.