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.
definition: Greek civilization created by Indo- Europeans that lasted from 1600- 1100 BCE, during which large palaces were made, wars fought, trade established; earthquakes and invaders caused it to finally collapse. significance: beginnings of Greece, its fall led to the poleis.