Before students can reason about the annexation decision, they need the raw material: the words, the facts, and the geography. These three activities are fast and front-loaded — the goal is acquisition, not yet analysis.
Introduce and let students sort the unit vocabulary. Sort twice: first by “words about being an independent country” vs. “words about joining the United States,” then by student-invented categories (feedback on their reasoning).
| Word | Student-friendly meaning |
|---|---|
| republic | a country run by elected leaders, not a king — like Texas from 1836 to 1845 |
| annexation | one country adding another's territory to itself — here, the U.S. taking in Texas |
| statehood | becoming a state within the United States, with U.S. laws and protection |
| national debt | the money a government owes and must pay back |
| sovereignty | a country's power to govern itself and make its own decisions |
| treaty | a formal, written agreement between countries |
| tariff | a tax a government puts on goods coming in from another country |
| sectionalism | loyalty to one region's interests over the whole country — North vs. South over slavery |
| ratify | to formally approve an agreement so it becomes official |
| stakeholder | anyone who is affected by a decision or has something at stake |
📚 Background: Handbook of Texas · Annexation ↗ — puts the vocabulary in the real 1845 story.
Split the class into four expert groups, each studying one topic below, then re-mix into home groups where every topic is represented. Each expert teaches their group. (Jigsaw is one of the highest-leverage surface moves precisely because students must teach.)
Sources for each expert group (free, reputable; confirm access through your district — links open in a new tab):
Independent since 1836, the Republic was deep in debt, hard to defend against raids and Mexico, and slow to win recognition from other nations. Many Texans wondered how long it could survive alone.
📄 Handbook of Texas · Republic of Texas ↗
📄 Texas State Library · Hard Road to Texas (debt & defense) ↗
Supporters said annexation would bring security from the U.S. Army, help pay Texas's debt, open trade, and connect Texas to a larger economy. Leaders like Sam Houston weighed the offer carefully.
📄 Handbook of Texas · Annexation ↗
📄 Handbook of Texas · Sam Houston ↗
Others prized Texas's hard-won sovereignty and worried that joining would mean giving up self-rule, taking on new taxes and tariffs, and being pulled into other countries' quarrels.
📄 Handbook of Texas · Anson Jones (last president) ↗
📄 Handbook of Texas · Mirabeau B. Lamar ↗
Mexico had never accepted Texas independence and warned that annexation could mean war. In the U.S., annexation was also a fight over slavery: Texas allowed slavery, so joining as a slave state deepened the North–South divide.
📄 Handbook of Texas · Mexican War ↗
📄 Handbook of Texas · Slavery ↗
Check for understanding: each home group writes one sentence answering “Name one reason a Texan might vote to join the U.S., and one reason a Texan might vote to stay independent.”
📚 Sources: Handbook of Texas · Annexation ↗ · Texas State Library · Hard Road to Texas ↗
Using a map of North America in the 1840s, students locate the Republic of Texas, the United States to the east, and Mexico to the south and west. Have them mark the Rio Grande and the disputed borderland, and note how Texas sat between two larger powers — a fact that shaped every choice about security and trade.
Simple data read: the Republic of Texas owed a national debt of roughly $10 million by the mid-1840s, while its whole population was only about 140,000 people (not counting the many who were enslaved as free residents). Have students compare those two numbers and answer: “With so few people and so much debt, why might paying it back alone be hard? How could joining a larger country change that?”
Quick write: “The Republic of Texas was independent, but it struggled with ______. Joining the United States might help by ______, but it could cost ______.”
🗺️ Maps & sources: Texas State Library · The Republic of Texas ↗ · Handbook of Texas · Republic of Texas (debt & population) ↗
Aligned to (not reproduced from) 19 TAC Ch.113 §113.19; effect sizes from Visible Learning MetaX. This scenario dramatizes the real debate over Texas annexation in 1845.