Answer:
Roughly 40 percent of Americans lived in cities, and the number was climbing. These large city populations caused crime rates to rise, and disease to spread rapidly. As a result of unsanitary living conditions, diseases such as cholera, dysentery, and typhoid fever struck urban areas with increasing frequency.
A curator manages, administers or organizes a collection while caretakers take care of a place or thing.
Answer: B. keep the balance of power in the Senate between the slave states and free states.
Further detail:
The Missouri Compromise (1820) admitted Missouri into the Union as a slave state with Maine being added at the same time to keep the balance of slave and free states equal. It also prohibited any future slave states north of the latitude line 36 1/2 degrees north of the equator in territories of the Louisiana Purchase, with the exception of Missouri (north of that line) being admitted as a slave state.
Answer:
The Second Industrial Revolution, also known as the Technological Revolution, was a phase of rapid standardization and industrialization from the late 19th century into the early 20th century. ... In the same time period, new technological systems were introduced, most significantly electrical power and telephones.
