Why how did the monroe doctrine assert american nationalism?

Iam a word that means to bring to fields and crops

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.

Need ! how did sumner define liberty in the book of "voices of freedom"