Final answer:
The march to Czechoslovakia resulted from the failed appeasement policy of the Western powers, leading to Germany's occupation of Czechoslovakia and signifying a pivotal turn in World War II that set the stage for the invasion of Poland.
Step-by-step explanation:
The decision to embark on a march to Czechoslovakia during World War II was primarily due to the appeasement policy of the Western powers, particularly Britain and France.
Alarmed by Hitler's demands and the potential for a major conflict, these countries agreed at the Munich Conference in 1938 to the annexation of the Sudetenland by Germany under the guise of protecting its German minority.
However, Germany's occupation of Czechoslovakia in March 1939 demonstrated that appeasement had failed, prompting a shift in policy. This occupation marked a significant turn in the war, exposing the inability of the Western powers to enforce the Treaty of Versailles.
Polish independence soon became a focal point, with Britain and France guaranteeing military support should Germany threaten it, effectively ending the appeasement era and setting the stage for the invasion of Poland and the onset of World War II.