The answer is:
The major industrial cities became overcrowded as workers from rural areas moved there.
and
Because of the steady increase in food production, the population nearly doubled between 1800 and 1850.
To protect the Spanish territory from the French :)
I know that it was cheap land so it would be A or D to my best judgement. Are you good at math?
Answer: mistreatment of animals
Haymarket, Homestead, and Pullman were all violent labor strikes.
The Homestead Strike occurred in 1892 in Homestead PA and was a violent battle between laborers and hired Pinkertons after a lockout.
The Haymarket Affair occurred in Chicago in 1896 and involved a violent labor protest and a bombing.
The Pullman Strike occurred in 1894 and was a nationwide violent railroad strike.
