What are primary sources important when studying historical events?

Why was it difficult fpr unions to succeed in the 1800s

Answer the questions in the image for zoom in to read : )

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.