{"gt_parse": {"text_sequence": "by Apache Indians. The US Army to ok control of the pu rchase lands in 1854 but not until 1856 were troops sta tioned in the trouble d region. In Jun e 1857 it establ ished Fort Bu chanan south of the Gila at the head of the Sonoita Creek Valle y. The fort protected th e area until it was evac uated a nd de stroy ed in J uly 1861. T he new sta bility brou"}}