Why was the nile called the lifeblood of egypt

Explain how zollverein, a tariff agreement, to unite the german states.

Why might collective bargaining fail, causing a union to go on strike? a the union agrees with the boss about wages. b the boss compromises about work hours. c the factory goes out of business, causing the workers to lose their jobs. d the boss refuses to address dangerous working conditions in the factories.

What are some inventions during the han dynasty?