(a) One major historical factor that contributed to the change depicted on the graph is the Industrial Revolution. During this time period, the Industrial Revolution was in full swing, leading to significant advancements in technology and manufacturing. These advancements created a demand for labor, which in turn attracted immigrants to the United States in search of employment opportunities. The increased immigration during this time period can be attributed to the economic opportunities presented by the Industrial Revolution.
(b) One specific historical effect that resulted from the change depicted on the graph is the growth of urban areas. As more immigrants arrived in the United States, they settled primarily in cities and industrial centers where job opportunities were abundant. This led to the rapid expansion of urban areas, with cities like New York, Boston, and Philadelphia experiencing significant population growth. The influx of immigrants contributed to the development and diversification of these cities, shaping their cultural, social, and economic landscapes.
(c) Another specific historical effect that resulted from the change depicted on the graph is the rise of nativist sentiments and anti-immigrant movements. As the number of immigrants increased, particularly from countries like Ireland and Germany, nativist groups emerged, advocating for restrictions on immigration. These groups believed that immigrants posed a threat to American society and culture, leading to increased tensions and discrimination against immigrant communities. The rise of nativism during this time period had long-lasting effects on immigration policies and attitudes in the United States.