Which major conflict significantly affected the population demographics in Texas?

The Civil War had a profound and lasting impact on the population demographics of Texas. During the conflict, Texas was a part of the Confederate States, and as such, the war influenced migration patterns, economic conditions, and social structures within the state.

Following the Civil War, numerous changes occurred, including the emancipation of enslaved people, which dramatically altered the demographics of the population as new social and labor dynamics emerged. Many formerly enslaved individuals settled in Texas, leading to increased diversity in the population. Additionally, the aftermath of the war led to the migration of various groups, including those seeking new opportunities in the devastated economies of the South.

The other conflicts listed—The Revolutionary War, The War of 1812, and The Spanish-American War—while significant in their own rights, did not have the same breadth of impact on Texas's demographic composition. The Revolutionary War primarily focused on the independence of the Thirteen Colonies from Britain, The War of 1812 involved issues related to national identity and territorial boundaries without a substantial impact on Texas's population, and the Spanish-American War occurred later, primarily impacting territories outside of Texas and dealing with Spanish colonial rule rather than local demographic changes. Thus, the Civil War stands out as the conflict