Which event occurred in December 1845?

• A. Texas became part of the United States
• B. The Battle of the Alamo
• C. Texas declared independence
• D. The Mexican Cession

Answer: (A)

In December 1845, Texas officially joined the United States as a state. This followed Texas’s earlier struggle for independence from Mexico in 1836 and its long push to become part of the United States. On December 29, 1845, Texas became a state, adding to the country’s size and shaping its westward expansion.

The other events happened at different times: the Battle of the Alamo occurred in 1836 during the fight for Texas independence; Texas declared independence in 1836, separate from joining the United States; and the Mexican Cession refers to land Mexico ceded to the United States after the Mexican-American War, finalized in 1848.