Simple question.

while the first industrial revolution saw a change in producing goods using human and animal power to machines, the second industrial revolution of the 19th century saw a change from using to
a. stone; metal
b. iron; steel
c. machines; humans & animals
d. self-learning robots; man-powered simple machines

Which of the following statements describes how the punic wars contributed to the development of the roman empire? (5 points) they allowed the romans to focus more on expanding into the western mediterranean. they resulted in the overthrow of the roman republic and establishment of the empire. they marked the end of roman expansion in the mediterranean region. they forced the romans to reorganize their government with an emperor as ruler.

True or false plebeians were the highest social class in ancient rome

What is the tallest mountain range in south america? a guiana highlands b the patagonia mountians c the andes mountians d brazilian mountains