An independent research opens a revolutionary perspective in the history of religions and sheds new light on the still unexplained emergence of the buddhist Great Vehicle in the 1st century CE, demonstrating the influence of the early Christians, in the strongly hellenized area of the Kushan Empire (China, Afghanistan, Pakistan, Kashmir, Northern India), heir of Alexander's conquests on the Silk Road, where Greek and Aramaïc were the two main languages currently spoken and written. Two millenia ago, the simultaneous spread of Christianity in the West and the Middle East, and Mahayana Buddhism in the East redrew the World map, but could it be only coincidence? Why did new sutras emphasizing compassion, devotion, voidness, sacrifice and universal salvation emerge in the first decades of our era in the Buddhism of the Origins? Why did, at the same time as Greek-Buddhist art, a 'Western triad' of buddhas appear in Gandhara, composed by a buddha of infinite light, Amitabha, a white bodhisat