Didn't read the book but mostly Louis was brave because he risked making vaccines and testing them on others to save many more people. He made the effort to save others and did a lot of work and experiments to help advance the medical world of science.
Answer: D. A large percentage of Americans became factory workers in cities
Explanation: The industrial revolution caused rapid urbanization in America, with people moving from the countryside to the cities in droves. ... The industrial revolution also caused a rise in unskilled labor. Prior to the 19th century, most Americans who were not employed in agriculture performed a skilled trade.
Barbarous,destructive,vandal,offensive, and disparaging.
B.) Supplies were scarce and demand was great. Entrepreneurs provided the things the miners needed. That allowed the entrepreneurs to earn good profits.
