Which of the following identifies a reason why the US annexed Texas?

President Tyler believe that Polk's election showed a support for annexation.

Who is the first president of the Republic of Texas?
Sam Houston.

Explain how public debt became an issue prior to annexation of Texas?
Texas started off in debt and continued by taking loans and printing more money to make ends meet.

Which of the following explains why national security was an issue in the annexation between Texas and the US?
Mexico did not agree to the validity of the treaty of velasco after the Texas revolution.

Which of the following best explains a reason why Texas decided to secede for the Union?
Texas believed the statement should be able to make decisions for themselves.

This answer does not accurately explain why Texas decided to secede from the Union. The most common reason for Texas secession was the election of Abraham Lincoln, who was seen as a threat to the institution of slavery by many Southern states, including Texas. Texas seceded from the Union primarily to protect and preserve the institution of slavery.