The Romans fought wars against the Persians for more than 380
years. Their disputes were mainly about Armenia, a territory which
stood in between the two empires. The Persian Empire was powerful
enough to stand up to Roman Empire. These wars were costly and
required to use of large military resources to fight in an area
which was far away from the vast frontiers of the Roman Empire in
Europe, which were often under attack by peoples to the north and
the east of these frontiers. This situation contributed to the
Roman army becoming overstretched when it had to face a series of
invasions, could create a lot of strain and made it more difficult
for the Romans to defend the European area of their empire.
Alexander founded up to 70 new cities
Alexandria was founded around a small Ancient Egyptian town c. 331 BC by Alexander the Great. It became an important center of the Hellenistic civilization and remained the capital of Hellenistic and Roman & Byzantine Egypt for almost 1000 years until the Muslim conquest of Egypt in AD 641, when a new capital was founded at Fustat (later absorbed into Cairo). Hellenistic Alexandria was best known for the Lighthouse of Alexandria (Pharos), one of the Seven Wonders of the Ancient World;
Archimedean screw was used for extracting water
Hellenism is the term used to describe the influence of Greek culture on the peoples the Greek and Roman Empires conquered or interacted with.The hellenistic culture lived on in the love of the Greeks had for art and science. They also passed on architecture to the future civilizations.
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