Which letter correctly identifies the Isthmus of Panama?

A

B

C

D

it was on the rise and doing very well and would continue to do well until the great depression from 1929-1939

where is the passage

i cant solve it without knowing the passage

naturalization is the process of gaining united states citizenship. becoming an american citizen is the ultimate goal for many immigrants, but very few people are aware that the requirements for naturalization have been over 200 years in the making.