The original purpose of the SS was to serve as a protection squadron for Hitler and many of his political allies, although it quickly turned into a terrorist force that upheld the values of the Nazi Party in Germany.
The great ancient civilizations flourished around river valleys because the rivers produce rich fertile soil and a supply of water for irrigation of crops and human consumption. This allows for the agricultural production to be greater and it can sustain more people.
Nixon when to China in 1970s to normalize relations and met with Zhou Enlai
