What do carter grant Kennedy Coolidge have in common?

Carter, Grant, Kennedy, and Coolidge were all Presidents of the United States. They each played significant roles during pivotal moments in American history, with their presidencies reflecting different political ideologies and challenges. Additionally, they all faced unique domestic and foreign issues during their time in office, shaping their legacies in various ways. Lastly, they are all part of the broader narrative of U.S. presidential history.