Answer:
California was admitted to the Union as a free state.
The Knights of Labor declined due to their use of secrecy in
their negotiations with management. Many
used deception to maintain the employment of laborers. Later on their secret methods alarmed many
bishops who later condemned the Knights and led to their decline. Apart from that, many members were Catholic.
-Natural barriers - no influence or threat
-Nile river - provided annual floodings, fertile land, and communication
-Papyrus used to make a type of paper
-Access to metals