The Mexican-American War is a free printable Grade 3 to Grade 5 social studies worksheet on the causes and effects of the Mexican-American War, aligned to C3 Framework indicator D2.His.14.3-5. It prints 3 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 13 of 25 · the same problems every time you open this link.

One paper per student

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

The Mexican-American War

D2.His.14.3-5

NameDate

Sort each one: was it a cause of the war or an effect of it?

1.Sort each one: Cause or Effect?

Sort: Tens of thousands of Mexican citizens now lived inside the United States, President Polk sent US soldiers into the land between the two rivers, Many Americans believed the country should stretch to the Pacific Ocean, California, Nevada and Utah became US land

CauseEffect

2.Sort each one: Cause or Effect?

Sort: The Treaty of Guadalupe Hidalgo was signed in 1848, Mexican and US soldiers clashed near the Rio Grande in April 1846, Thousands of soldiers on both sides died, Some Americans hoped new land would let slavery spread

CauseEffect

3.Sort each one: Cause or Effect?

Sort: Mexico gave up about half of its land, Mexico refused to sell California and New Mexico to the United States, The United States paid Mexico $15 million, The United States annexed Texas in 1845

CauseEffect

LessonPrint · D2.His.14.3-5 · Set 13 · free to copy for classroom use

Answer key — The Mexican-American War

Set 13. Prints on its own sheet.

1.1. California, Nevada and Utah became US land — Effect 2. Many Americans believed the country should stretch to the Pacific Ocean — Cause 3. President Polk sent US soldiers into the land between the two rivers — Cause 4. Tens of thousands of Mexican citizens now lived inside the United States — Effect
2.1. Mexican and US soldiers clashed near the Rio Grande in April 1846 — Cause 2. Some Americans hoped new land would let slavery spread — Cause 3. The Treaty of Guadalupe Hidalgo was signed in 1848 — Effect 4. Thousands of soldiers on both sides died — Effect
3.1. Mexico gave up about half of its land — Effect 2. Mexico refused to sell California and New Mexico to the United States — Cause 3. The United States annexed Texas in 1845 — Cause 4. The United States paid Mexico $15 million — Effect

Last reviewed 2026-09-05. Aligned to D2.His.14.3-5 of the C3 Framework for Social Studies State Standards.