8th Grade US History Practice Test

The main idea here is understanding which amendment establishes who is a citizen and guarantees equal protection under the law. The Fourteenth Amendment, ratified during Reconstruction, does exactly that. It includes the Citizenship Clause, which says that anyone born or naturalized in the United States is a citizen, and the Equal Protection Clause, which prevents states from denying any person within their jurisdiction the equal protection of the laws. This combination creates both birthright citizenship and broad protection against unequal treatment under state laws.

The other amendments address different rights: the Thirteenth Amendment abolishes slavery; the Fifteenth Amendment prohibits denying the right to vote based on race; the Nineteenth Amendment grants women the right to vote. While important civil rights milestones, they do not establish the general rule of citizenship for all born or naturalized residents and the overarching equal protection guarantee that the Fourteenth Amendment provides.