The history of Afghanistan goes back to the time of Asoka (3rd century BC). In the beginning of the Christian era, under kushanas , Afghanistan played a major role in the propagation of Buddhism. Kaspia and Nagarahara important centuries of the early period. Bamiyan well known for the early period. Bamiyan well known for the two early period. Bamiyan well known for the two tallest Buddha statues of the world (120ft and 175ft) and murals. The invasion of the white Huns (12th century) resulted in the disappearance of Buddhism in Afghanistan.