A relative humidity level between 40% and 50% is generally considered to be the most comfortable. Anywhere from 30% to 60% is acceptable, but ideally you want to avoid the extremes of that range.
Ancient Greek civilization began around 1600 BC, at Mycenae and in Crete. It ended with the annexation of Greece by Rome in 146 BC. It was at its height around 431 BC, when the Peloponnesian War between Sparta and Athens began.
THE RISE OF THE GREEK EMPIRE. The origins of Greece are shrouded in mystery and date back to the time of Abraham, 18th century BCE, or perhaps even earlier. Historians disagree as to where the Greeks came from.