Research and check out the web sites provided below;

Ancient Indus Civilization – Harappa
Buddhism – BBC
Buddhism and Buddhist Art – MET Museum
Buddhist Art and Architecture
Buddhist Education and Information – BuddhaNet
Buddhist Stupa: Architecture and Symbolism – Approach Guides
Edicts of Ashoka – PBS
Essentials of Buddhism
Hinduism – BBC
Hinduism: The Arts – Britannica
Hinduism and Hindu Art – MET Museum
Life of the Buddha – MET Museum
South Asian Art and Culture – The MET Museum