The nation of Czechoslovakia was founded in October 1918. It was founded by Tomas Garrigue Masaryk and he became the nation's first president on November 14 1918 and ended on December 14 1935.
Hope this helps,
kwrob
Early in the twentieth century, rapid economic and technological change, increasing competition among powerful states, and resistance to European domination worked together to destabilize the world system. Underlying tensions and weaknesses led to a series of crises that altered the world in several important ways.