1. James K. Polk: President of the United States during the Mexican-American War. He advocated for the annexation of Texas and pushed for war with Mexico.
2. Zachary Taylor: American military commander who led the United States Army to victory in several key battles during the Mexican-American War. He served as the 12th President of the United States from 1849 until his death in 1850.
3. Winfield Scott: Another prominent American general who succeeded Taylor as the commander of the United States forces in Mexico. He led the successful invasion of Mexico City, which ended the war.
4. Antonio López de Santa Anna: Mexican general and politician who served as the President of Mexico several times during the war. He was a skilled military leader but also faced challenges managing internal divisions within Mexico.
5. José Mariano Salas: Another Mexican general and politician who played a significant role in the early stages of the war. He was instrumental in the overthrowing of Santa Anna in 1846 but was later defeated by American forces.
6. Robert E. Lee: A young American military officer who served during the Mexican-American War. He gained valuable combat experience and went on to become a prominent Confederate general during the American Civil War.
7. Ulysses S. Grant: Another young American officer who served with distinction in the Mexican-American War. He won several battles and received recognition for his leadership, paving the way for his future success during the American Civil War.
8. John C. Frémont: A prominent American explorer, soldier, and politician. He led an expedition to California and declared the establishment of the California Republic. He later became the first U.S. Senator from California.
9. William H. Prescott: American historian who wrote extensively about the history of Spanish America and the Mexican-American War. His works played a crucial role in shaping public perception and understanding of the conflict.
10. Nicholas Trist: American diplomat who negotiated the Treaty of Guadalupe Hidalgo, which formally ended the Mexican-American War. He faced significant challenges and acted independently at times to secure the best possible terms for the United States.
These individuals, among others, played key roles in shaping the course of the Mexican-American War and its impact on the United States and Mexico.