The Texas Declaration of Independence was adopted on March 2, 1836, by delegates at the Convention of 1836 in Washington-on-the-Brazos. This document declared Texas free from Mexican rule and outlined the reasons for the separation, including grievances against President Antonio López de Santa Anna and his government. The declaration emphasized the desire for self-governance and the protection of individual rights. It served as a foundational document for the establishment of the Republic of Texas, which existed until it joined the United States in 1845. The declaration is a significant event in Texas history and American expansion.