What did the people gain from the civil rights act

Which of the following was probably the most difficult challenge facing construction of the railroad?

Plz which of the following statements about spanish plantations is not accurate? a. spanish plantations grew sugarcane for export to spain b. the spanish had little concerned for the lives of the indians who worked on the plantations. c. spanish plantations grew wide variety of crops and center produce to many different european countries. d. to replace the native americans our dying off the spanish imported african slaves.

Brainliest answer is provided who made this world? who made us? who made everything?