Chinese and Irish Immigrants, and African Americans
The correct answer is A) The 15th Amendment.
After The Union had defeated The Confederacy, the right to vote was guaranteed to all races. This was possible because the Union was in favor of equality.
The correct answer is option D. "Companies replaced hand-operated brakes with air brakes on trains". The development of air brakes on trains was a significant improvement of railroad safety. Air brakes function much more faster than hand-operated brakes, because hand-operated brakes required that the brakemen turned the brakes in one car and jump to the next to set the brakes on, and so on.
Answer:
when tje stock market crashed during the great depression people had it rough. getting food was the hardest you could do. people were starving and dying everywhere. kids were getting sick and dying. people couldn't do anything but jope
