Many national and international organizations encourage people to form local branches. Some examples are the Red Cross or Red Crescent Society, Boy and Girl Scouts or Guides, and the 4-H youth agricultural movement. The work of many of those groups is directly related to health and community development.
I believe its the first answer
The Egyptians lived by the Nile River so when the Nile River flooded it helped with the crops growing because the soil would wet and rich.