Answer:
Martin de Leon was a rancher and wealthy Mexican empresario in Texas who was descended from Spanish aristocracy. He was the patriarch of one of the prominent founding families of early Texas.
Explanation:
The Transcontinental Railroad was also instrumental in putting thousands of people to work, and also they were instrumental in transporting cattle and resources in much more efficient ways.
Hippocrates studied the causes of illnesses.
Socrates invented a teaching method that involved asking questions.
Eratosthenes determined that the Earth was round.
Aristotle educated Alexander the Great.
Answer:
I'm strayan so like dont take what I SAY legit but reckon its B :)
D. working class. Much of that huge population surge was made up of poor European immigrants who lived in overcrowded slums on the West and South Sides, doing grueling work for low wages in the city’s stockyards, factories, and on the railroads.