What power sources did humans use before and during McCoy's era?

People used animal power, mules, oxen, and horses.
People used wind power, used to pump water from wells.
People used water powered mills used to grind grains and cut lumber.
all of the above

Which historical detail can best clarify a reader’s understanding of the information in the excerpt? immigrant factory workers who spoke the same language were separated from each other at work. immigrant factory workers who spoke the same language were known to talk too much at work. immigrant factory workers had to pay rent for their chairs and the supplies they needed at work. immigrant factory workers were crowded into unsafe buildings with locked doors and fire escapes.

Vonnegut says that he can't visit the school because the story is called make your soul grow

Looking for the meaning/definition of the following greek/latin roots!* bel- * fal/fals-