Complex sentence: Future President Theodore Roosevelt also visited when he was in San Antonio recruiting for the Rough Riders.On November 21st, 1963, John F. Kennedy visited the school, the next day, he was assassinated in Dallas.
Split into simpler sentences: Future President Theodore Roosevelt also visited when he was in San Antonio recruiting for the Rough Riders. In 1963, John F. Kennedy visited the school, rhe next day, he was assassinated in Dallas.