George Washington created history when he became the first President of the United States after the nation’s independence from British colonial. One of the Founding Fathers of the United States he was much admired for his strong leadership qualities. Thomas Jefferson, principal author of the Declaration of Independence, is consistently ranked as one of the most successful U.S. Presidents by historians. Abraham Lincoln, another highly ranked U.S. President, led the nation through its Civil War, abolished slavery, modernized the economy and strengthened the federal government. Theodore Roosevelt, who came to presidency at age 42, following the assassination of President McKinley in September 1901 became the youngest U.S. President in history. A highly respected leader of the nation, he was also the recipient of the 1906 Nobel Peace Prize. Warren Harding, one of the most popular presidents in history at the time of his death, later came to be rated among the worst in the historical rankings of the U.S. presidents. Franklin D. Roosevelt, John F. Kennedy, Ronald Reagan, and George H. W. Bush are among the 20th century American Presidents. Barack Obama, who became the president in 2009 is the first African American to hold the office. This section provides you information about the life and works of American presidents.