The Lincoln–Douglas debates (also known as The Great Debates of 1858) were a series of seven debates between Abraham Lincoln, the Republican candidate for the United States Senate from Illinois, and incumbent Senator Stephen Douglas, the Democratic Party candidate.
The answer is Presidents have gradually assumed more power to deal with crises
U.S., Great Britain, and Ireland.
Charlemagne's greatest achievement was conquering much of Europe. He stability to a large area during an unstable time in history.