It is a the growth in an economy circulation
Answer:
People with type O- blood are called universal donors because their donated red blood cells have no A, B or Rh antigens and can therefore be safely given to people of any blood group. ... Their plasma does not contain A or B antibodies and can be transfused safely to all blood types.
Not just Equal pay, they pushed for equal rights. They wanted to be mans equal, by protesting, violence, etc.
The cultures that were mummifying people may have gotten supplies and had trade routes with Shang China.