History of ancient Egypt over the country to Alexander the Great without a fight. The Achaemenid empire had ended, and for a while Egypt was a satrapy in Alexander's empire. Later the Ptolemies and then the Romans successively ruled the Nile valley. In 332 BC Alexander III of Macedon conquered Egypt with little resistance from the Persians. He was welcomed by the Egyptians as a deliverer. He visited Memphis, and went on a pilgrimage to the oracle of Amun at the Oasis of Siwa. The oracle declared him the son of Amun. He conciliated the Egyptians by the respect he showed for their religion,
Irrigation works in ancient Sri Lanka to 367 BC. It is said that he had three tanks built, namely "Abhaya weva", "Gamini weva", and "Jaya weva", yet, presently, only one tank named "Basawakkulama weva" can be identified. After King Pandukabhaya, King Parakramabahu I had many tanks built, with one large tank called "Parakrama samudraya" still providing water for agriculture. It can be said that many rulers of Sri Lanka contributed to the development and construction of tanks all over the "Raja Rata" (Northern part of the country). Irrigation works in ancient Sri Lanka The irrigation works in ancient Sri Lanka, the earliest dating from about 300