Final answer:
Between 1990 and 2000, the number of people in the United States who spoke a language other than English at home increased.
Step-by-step explanation:
Between 1990 and 2000, the number of people in the United States who spoke a language other than English at home increased. According to Census 2000, there were approximately 55 million people who spoke a language other than English at home in 2000, compared to an unknown number in 1990. This increase in linguistic diversity is attributed to factors such as immigration and the growth of the Hispanic population.