What kept The United States from Annexing Texas right away? Group of answer choices

Issues with slavery and question about relations with Mexico

Texas was a slave holding State, and The United States forbid slavery.

The United States was busy with International issues

United States didn't want Texas

Ahistorian has discovered a letter written by an early roman emperor. she translates the letter and discovers that it contains orders to a general before a battle. she works to determine when the letter was written to figure out which battle the letter references.the historian in the passage is most clearly demonstrating which historical thinking skill? a. identifying causes and historical contextb. thinking chronologicallyc. making and evaluating arguments and interpretationsd. analyzing historical sources