Who was the U.S. President when Texas was annexed?

• A. Thomas Jefferson
• B. James K. Polk
• C. Zachary Taylor
• D. Franklin Pierce

Answer: (B)

Texas was annexed into the United States in 1845, during James K. Polk’s presidency. Polk took office in 1845 and actively supported westward expansion, including bringing Texas into the Union. This timing—annexation happening as he began his term—makes him the president associated with Texas joining the United States.

Think about the other presidents: Thomas Jefferson was in office long before this event, known for the Louisiana Purchase. Zachary Taylor served as president a few years later, after the annexation, and Franklin Pierce came even later. They’re not linked to the moment Texas became a state.