While Puerto Rico became a U.S. possession in 1899, migration to the United States increased dramatically
a. after World War II.
b. after World War I.
c. in the last ten years.
d. in the last twenty years.
Question 2
Two factors were said to account for the high rates of Puerto Rican family poverty. These two factors are
A) language problems and lack of employment.
B) employment patterns and female-headed households.
C) single parenthood and inadequate welfare benefits.
D) large family size and employment patterns.
Migration and gene flow.
How Safe Is Your State? Violent Crime in the United States
Educational Achievement in the United States
The three states of matter: solid, liquid, and gas.
The 300-meter Radio Telescope at Arecibo, Puerto Rico
Survivorship curves for people in the United States in the early 20th and early 21st centuries