Which posed the greatest challenge to pioneers crossing the western mountains? a: american indian attacks
b: lack of water
c: hot desert sand
d: dangerous passes

Which statement best describes the relationship between the fifth and fourteenth amendments?

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.

Which of the following is/are a major technological advances of the mayan civilization? a. the calendar c. math b. architecture d. all of the above