US Presidency in the 20th Century: Major Changes
Source: Presidency of the United States of America - 20th Century Changes (2025-09-20)
The excerpt highlights the significant transformations in the presidency of the United States during the 20th century. It suggests that this period was marked by notable shifts in leadership and political dynamics. While specific details are not provided, the mention of Britannica indicates a comprehensive overview of these historical changes, emphasizing the importance of this era in shaping modern American governance.