14 A PILGRIMAGE FOR PEACE Ghazni and Kabul on one side and through Kandahar and the Sulaiman mountains on the other, to the country water- ed by the river Indus. In the great epic Mahabharata, which is supposed to have been composed in about 3000 B.C., figures the celebrated heroine Gandhari — native of Gandhar (modern Peshawar) the mother of the Kaura- vas, the rulers of Hastinapur (modern Delhi). Panini, the great Sanskrit grammarian — perhaps the greatest gram- marian that the world has produced — was born and. bred in this region. Peshawar is said to have been founded by Parashurama, the great brahmana warrior who figures in the other ancient epic of India — the Ramayana. About the 5th century B. C. Cyrus, King of Persia, led his army into the territory that corresponds to the modem Afghan- istan and Baluchistan, and Darius I annexed Gandhar (modern Peshawar and Rawalpindi Districts). The pro- vince provided troops to Xerxes for his invasion of Greece. In 326 B. C. the Greeks under Alexander the Great, entered India and conquered the Peshawar valley which was at that time under the rule of a Raja whose capital was Pushkarwati — the modern Charsadda, on the Kabul river — and made it into a Governor's province under a Macedonian officer named Philip. The Hindu chief of Taxila, then a great centre of Buddhistic learning, labour- ing under a grievance against his neighbour, King Porus, invited the foreign invader to attack his rival. Porus was overthrown in battle and Alexander, after restoring his kingdom to him, pushed on as far as the Beas where his troops refused to march further against the powerful King of Magadha and the Macedonian had to retreat. After Alexander's death in 323 B. C., Ambhi, the Governor of Taxila, and Porus — their power broken by the Greek in- vasion—were subdued by Chandragupta and their terri- tory was incorporated in the Maurya Empire of the King of Magadha. The whole of Afghanistan and Frontier tracts of northern India, including Kashmir,, came under the highly developed civil and military administrative system of Chandragupta, as detailed in the Arthashastra of Kau- tilya, his world-famed Minister of State. In Chandragupta's