Grade 4 Spring — US National Geography and Westward Expansion (1803–1890): Whose Land, Whose Story, Whose Future?
History · HIS G4 (D2.His.3-5.3-5; D2.Civ.5-6.3-5 treaty as law; CA HSS 4.3 + 5.8.2 G5 entry; TEKS 4.3 + 5.2 G5 entry) hist.g4.s.his.mexican_american_war_borderlands

Analyze the Mexican-American War (1846–1848), Treaty of Guadalupe Hidalgo (1848), and the post-treaty borderlands Mexican American community

Analyze the Mexican-American War 1846–1848 with attention to multiple perspectives (Mexican government, Mexican civilian communities of present-day CA/NM/AZ/TX, US government, US soldiers — including enslaved African Americans drafted to fight, US opponents of the war including Henry David Thoreau and Abraham Lincoln who as a congressman voted against the war). Analyze the Treaty of Guadalupe Hidalgo 1848 with explicit reading of Article IX promising Mexican Americans 'incorporated into the Union' citizenship and property rights. Document the systematic violation of Article IX in subsequent decades (land-grant courts denying Mexican-American property claims; Greaser Act of 1855; segregated schools; Bracero Program 1942–1964). Center Mexican American community continuity: Santa Fe NM (founded 1610 — older than Plymouth Colony), Taos NM, Tucson AZ, San Antonio TX, Los Angeles CA — communities that pre-date US incorporation and continue today. Vocabulary: incorporated by treaty, borderlands, Article IX, land grant, community continuity.

Mastery threshold
80%
Min instances
10
Typical minutes
55
Spaced intervals (days)
1, 3, 7, 14, 30, 60
Common misconceptions
  • Calling Mexican Americans 'immigrants' (Mexican Americans of the borderlands were INCORPORATED by the Treaty of Guadalupe Hidalgo — the border crossed THEM)
  • Treating the war as a 'small war' (it transferred about 525,000 square miles and incorporated tens of thousands of Mexican Americans into the US)
  • Forgetting that Article IX of the treaty was systematically violated
  • Ignoring contemporary opposition to the war (Thoreau, Lincoln, abolitionists)

Exercise pool (4)