In the beginning of the 1st century AD, the Kushanas established their authority over the north-west frontier of India. The most famous among the Kushana kings was Kanishka (125 AD-162 AD), who was the third in the Kushana dynasty. The Kushana rule continued till the middle of 3rd century AD. The most notable achievement of their rule was the development of Gandhara School of Art and further spread of Buddhism into distant regions of Asia.