2. Woodrow Wilson believed that
areas after World War I.
would spread to other
I

secretly cooperate with one another.

i would say your answer would be the second option.

hope this !

a historian researching the immigration policies of the early 1900s would expect a source written today,rather than in 1910 to :

( a ) be more interested in objective data and statistics.

d. it adversely affected american productivity