1. On June 28, 1836, Texas officially declared independence from Mexico. This came after the Battle of San Jacinto on April 21, 1836, where Texas forces under the leadership of General Sam Houston defeated the Mexican army of General Santa Anna.

2. On June 28, 1894, the first train arrived in El Paso on the Atchison, Topeka, and Santa Fe Railway line. This allowed for increased transportation and commerce in the area and helped to establish El Paso as a major city in Texas.

3. On June 28, 1941, the US government established the Corpus Christi Naval Air Station. It became the largest naval aviation training facility in the world and played a crucial role in training pilots during World War II.

4. On June 28, 1973, the United States Supreme Court issued its landmark decision in Roe v. Wade, declaring that women have a constitutional right to decide whether to have an abortion. The case originated in Texas and was brought by a woman named Norma McCorvey (known in court documents as Jane Roe).

5. On June 28, 2015, the Supreme Court issued another landmark decision in Obergefell v. Hodges, declaring that same-sex couples have a constitutional right to marry. The lead plaintiff in the case was James Obergefell, a man from Ohio who wanted to be listed as his husband's spouse on his death certificate. Texas was one of several states where same-sex couples were not allowed to marry until the Supreme Court decision.