What was the ecomienda system?
a. a system in which spanish monarchs shared with native americans the right to demand labor from peons and africans
b. the spanish conquistadors granted native americans the right to demand labor from peons
c. monarchs granted the conquistadors the right to demand labor from the native americans
d, settlers granted the conquistadors the right to demand labor from native americans

on this day in 1913, henry ford installs the first moving assembly line for the mass production of an entire automobile. his innovation reduced the time it took to build a car from more than 12 hours to two hours and 30 minutes.

first industrial revolution - the first wave of the industrial revolution lasted from the late 1700s to the mid-1800s. it industrialized the manufacture of textiles and began the move of production from homes to factories. steam power and the cotton gin played an important role in this period.