Final answer:
Franklin D. Roosevelt experienced the greatest expansion of presidential authority, especially through his use of executive orders during the Great Depression and World War II.
Step-by-step explanation:
Among the presidents listed, Franklin D. Roosevelt (FDR) saw the greatest expansion of presidential authority. Roosevelt significantly expanded the use of executive orders as he navigated the United States through the Great Depression and World War II. This was partly due to the need for quicker governmental action during economic crises and war times.
FDR's expansion of powers included broadening the federal government's role in the economy and an increased influence in foreign policy matters as Commander in Chief during the war. While others like Abraham Lincoln also expanded presidential authority during the Civil War, Roosevelt's long tenure and the breadth of his actions make his presidency notable for the expansion of the executive branch's power.