Use the graph to answer the questions.
Which of the following was the most likely cause of the trend shown on the graph?(1 point)
Responses
the expansion of plantations and the spread of slavery
the expansion of plantations and the spread of slavery
the increase in the number of immigrants to the United States
the increase in the number of immigrants to the United States
the escalation of nativism in the Northeast
the escalation of nativism in the Northeast
the growth of industrialization and the development of factories