In a Venn diagram, the intersecting part of the circles typically represents shared or overlapping ideas between two or more concepts. If you were to group the statements based on themes related to immigration and settlement in the United States, the following main idea could be included in the intersecting part:
"Many immigrants have influenced the narrative of American history and culture."
This statement encapsulates the general theme of American immigration and the impact of various immigrant groups, including individuals who entered through Ellis Island and those who settled in the West. The mention of Pilgrims can also relate to this shared thematic intersection, as they are a specific group of early immigrants who have likewise influenced American narratives.
The other statements highlight specific historical facts or details, but they do not inherently connect in the same way as the theme of collective influence on American history and culture.