Which of these was not a major reason for immigration to america in the late 1800s and early 1900s?

What notable contributions to science has sandia national labs (snl) produced over the years?

Pls quickly! which of the following statements about spanish plantations is not accurate? a. spanish plantation screw sugarcane for export to spain. b. the spanish had a little concern for the lives of the indians who worked on the plantations. c. spanish presentation grew a wide variety of crops and sent the produce to many different european countries. d. to replace the native americans our dying off the spanish important african slaves.

Over time, who did the nature of slavery change in america