having disappeared. Ideology Buddhism flourished under the Indo-Greek kings, and their rule, especially that of Menander, has been remembered as benevolent. It has been suggested, although direct evidence is lacking, that their invasion of India was intended to show their support for the Mauryan empire which may have had a long history of marital alliances, exchange of presents, demonstrations of friendship, exchange of ambassadors and religious missions with the Greeks. The historian Diodorus even wrote that the king of Pataliputra had "great love for the Greeks". The Greek expansion into Indian territory may have been intended to protect Greek populations in India, and to protect the Buddhist faith from the religious persecutions of the Shungas. The city of Sirkap founded by Demetrius combines Greek and Indian influences without signs of segregation between the two cultures. The first Greek coins to be minted in India, those of Menander I and Apollodotus I bear the mention "Saviour king" (ΒΑΣΙΛΕΩΣ ΣΩΤΗΡΟΣ), a title with high value in the Greek world which indicated an important deflective victory. For instance, Ptolemy I had been Soter (saviour) because he had helped save Rhodes from Demetrius the Besieger, and Antiochus I because he had saved Asia Minor from the Gauls. The title was also inscribed in Pali as ("Tratarasa") on the reverse of their coins. Menander and Apollodotus may indeed have been saviours to the Greek populations residing in India, and to some of the Indians as well. Also, most of the coins of the Greek kings in India were bilingual, written in Greek on the front and in Pali on the back (in the Kharosthi script, derived from Aramaic, rather than the more eastern Brahmi, which was used only once on coins of Agathocles of Bactria), a tremendous concession to another culture never before made in the Hellenic world. From the reign of Apollodotus II, around 80 BC, Kharosthi letters started to be used as mintmarks on coins in combination with Greek monograms and mintmarks, suggesting the participation of local technicians to the minting process. Incidentally, these bilingual coins of the Indo-Greeks were the key in the decipherment of the Kharoshthi script by James Prinsep (1835) and Carl Ludwig Grotefend (1836). Kharoshthi became extinct around the 3rd century AD. In Indian literature, the Indo-Greeks are described as Yavanas (in Sanskrit), or Yonas (in Pali) both thought to be transliterations of "Ionians". In the Harivamsa the "Yavana"