Which of the following were changes america experienced during the second half of the nineteenth century? more then one answer
a. a war with great britain
b. major technological advances
c. an agricultural revolution
d. changes in education
e. the industrial revolution

Second half of the nineteenth century = 1850 - 1900

b. major technological advances
e. the industrial revolution

During this time period, people developed new technologies, one of the most impactful being steam power. They used elements to create stronger metals and new raw materials to manufacture different goods. Factories grew and the very beginning of mass producing emerged.