Why was the United States at first reluctant to annex Texas?

Ineed a summary over the 6th amendment

The primary goal of the abolitionist movement was to a) immediately emancipate or free all enslaved people. b) allow the gradual release of enslaved people. c) end the importation of enslaved people from africa. d) make mandatory the education of all enslaved people.

Answer the questions in the image for zoom in to read : )