Answer:
Stephen A. Douglas (1813-1861) was a U.S. politician, leader of the Democratic Party, and orator who espoused the cause of popular sovereignty in relation to the issue of slavery in the territories before the American Civil War (1861-1865). He was re-elected senator from Illinois in 1858 after a series of eloquent debates with the Republican candidate, Abraham Lincoln, who defeated him in the presidential race two years later.
Step-by-step explanation:
He believed in America's unique mission and manifest destiny, was a leading proponent of Texas annexation, demanded the acquisition of Oregon, and supported the war with Mexico. A man of great energy and persuasive power, standing only five feet four inches tall, Douglas became known as the Little Giant