This future state declared its independence in 1836 during a war with Mexico
... During Houston's first administration (183638), the public debt of... [DOC] [TLE] Texas Declaration of Independence, 1836 | The Gilder Lehrman ... [PAR] Civil War & Reconstruction, 1861-1877  Rise of Industrial America, 1877-1900 ... 
On March 2, 1836, Texas formally declared its independence from Mexico.