Question 1
An important factor promoting industrial development in the United States during the last half of the nineteenth century was
A) a shift from the use of steam to electricity as the major source of power.
B) regulation of the railroads.
C) technological innovations.
D) an increase in the size of the average American family.
Question 2
The reaction of the Senate investigating committee to Thomas O'Donnell's testimony concerning his living and working conditions indicated that the senators
A) were prepared to take immediate action to remedy his circumstances.
B) would support a public housing bill.
C) clearly understood and sympathized with his problems.
D) had little understanding of the world in which he lived.
Question 3
John Muir helped to establish ________ National Park.
Fill in the blank(s) with the appropriate word(s).
Indian wild boar (Sus scrofa cristatus) at Ranthambore National Park