The best answer for this question would be:
a.
A consistent influx of immigrants willing to
work for low wages
The immigrants at the time were desperate to find jobs, in
order to feed their families. This caused the workforce in the Lowell Mill to
increase.
They believed the spirit of the dead person would visit the body in bird form and needed to be able to recognize its body.
★the pharaoh was believed to have "ka" which was basically eternal life, and the body had to be kept in good condition so the pharaoh could recognize himself to visit and watch over the kingdom he used to rule
The most deadly illness the pioneers have faced was Oregon Trail, it was spread by for hunting food, picking berries, and most of all this terrible game kids used to play that made them realize the Oregon Trail was real. It also lead up to bad fever, cholera, and dysentery.
This is the main reason of the deadly illness pioneers had.
Hope this helps you :)
It was when millions of African Americans traveled from the rural south to the midwest, and northeast. They were escaping the still reoccurring Jim Crow lows and racism. Since the North was so welcoming to all races (much more than the South), there were way more job opportunities.