Aristarchus’ only extant treatise is “On the Sizes and Distances of the Sun and Moon.” In it he calculated the diameter of the Sun as about seven times the diameter of the Earth, thus estimating the Sun’s volume as about 300 times the volume of the Earth
Rroughly half to 60% can speak it well enough to hold a basic conversation
A common practice was to pay ridicilously small wages to workers themselves and pay even less to children and women who were working at factories. Another thing that was done was to either import foreign workers who would have to work for even less, or to move production to companies overseas where they would set up a distribution and where workers themselves would also have to work for very small amounts of money. This increased their profit margins.
It happened because the market was oberbought
When the Nazi's fled and the Russians (I believe) invaded was a huge turning point giving jews and all others captured, hope and freedom.