Question: why did texas originally joined the confederate states of america
[{'answer': 'March 2 , 1861', 'provenance': [{'wikipedia_id': '6696497', 'title': 'Texas in the American Civil War', 'start_paragraph_id': 1, 'start_character': 139, 'end_paragraph_id': 1, 'end_character': 153, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6696497', 'title': 'Texas in the American Civil War', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 853, 'bleu_score': 0.985764216565234, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 353340000793244938}, 'section': 'Section::::Abstract.'}]}]