Who are the US Nobel laureate presidents and why did they win it?

Answer 1

The 1906 Nobel Peace Prize was awarded to U.S. President Theodore Roosevelt "for his successful mediation to end the Russo-Japanese war and for his interest in arbitration, having provided the Hague arbitration court with its very first case."

The 1919 Nobel Peace Prize was awarded to U.S. President Woodrow Wilson "for his crucial role in establishing the League [of Nations]."

The 2002 Nobel Peace Prize was awarded to former U.S. President Jimmy Carter "for his decades of untiring effort to find peaceful solutions to international conflicts, to advance democracy and human rights, and to promote economic and social development."

The 2009 Nobel Peace Prize was awarded to U.S. President Barack Obama "for his extraordinary efforts to strengthen international diplomacy and cooperation between peoples."

One of two 1925 Nobel Peace Prizes was awarded to U.S. Vice President Charles G. Dawes "for [work on] the Dawes Plan for German reparations which was seen as having provided the economic underpinning of the Locarno Pact of 1925."

The 2007 Nobel Peace Prizes were awarded to former U.S. Vice President Al Gore and the Intergovernmental Panel on Climate Change "for their efforts to build up and disseminate greater knowledge about man-made climate change, and to lay the foundations for the measures that are needed to counteract such change."