How did steel spark a second industrial revolution?

This is a picture of workers in a factory. why was this picture most likely taken? to advertise that kids could get jobs to expose the horrors of child labor to show pride in children at work to show that night workers were needed o

In 1816, john c. calhoun proposed that: a. that the federal government aid in the construction of roads and canals to improve transportation to and from the west b.the united states should end slavery. c.the united states should increasing the size of the navy and invade central america. d. the united states should annex hawaii

Question 10 of 47 1 point what are the factors of the expression below? 4x2 + 12x +9 o a. (2x-3} b. (4x+3)(x+3) c. (2x+9)(2x+1) o d. (2x+3) submit