What were the main benefits of united states that led to annex texas

Mexico wanted to keep Texas, and Van Buren feared it would cause war. He also didn't want to add a new state to the Union that allowed slavery. People who wanted to annex Texas said it was the manifest destiny of the United States to spread from the Atlantic to the Pacific Ocean. In 1845, James Polk became President.

by improved communication.

political parties are protected under 6th amendment.